Deprecated: Constant E_STRICT is deprecated since 8.4, the error level was removed in /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 76

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_URI::$config is deprecated

Filename: core/URI.php

Line Number: 102

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Router::$uri is deprecated

Filename: core/Router.php

Line Number: 128

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$benchmark is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$hooks is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$config is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$log is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$utf8 is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$uri is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$exceptions is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$router is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$output is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$security is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$input is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$lang is deprecated

Filename: core/Controller.php

Line Number: 83

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$db is deprecated

Filename: core/Loader.php

Line Number: 397

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_DB_mysqli_driver::$failover is deprecated

Filename: database/DB_driver.php

Line Number: 372

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$ssp is deprecated

Filename: core/Loader.php

Line Number: 1284

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 303

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_cookie_params(): Session cookie parameters cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 328

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 355

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 365

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 366

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 367

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 368

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 426

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: drivers/Session_files_driver.php

Line Number: 109

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_save_handler(): Session save handler cannot be changed after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 110

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Session cannot be started after headers have already been sent (sent from /var/www/vhosts/radyoamatorleri.com/httpdocs/system/core/Exceptions.php on line 272)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$session is deprecated

Filename: core/Loader.php

Line Number: 1284

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$encryption is deprecated

Filename: core/Loader.php

Line Number: 1284

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 15
Function: __construct

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$section is deprecated

Filename: controllers/Portfolios.php

Line Number: 17

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 17
Function: _error_handler

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$pagination is deprecated

Filename: core/Loader.php

Line Number: 1284

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 25
Function: library

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$portfolio_model is deprecated

Filename: core/Loader.php

Line Number: 359

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 27
Function: model

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Portfolios::$portfolio_category_model is deprecated

Filename: core/Loader.php

Line Number: 359

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 28
Function: model

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$load is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$viewFolder is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$pageFolder is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$assetJsPath is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$assetCssPath is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$benchmark is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$hooks is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$config is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$log is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$utf8 is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$uri is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$exceptions is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$router is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$output is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$security is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$input is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$lang is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$db is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$ssp is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$session is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$encryption is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$section is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$pagination is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/application/controllers/Portfolios.php
Line: 167
Function: view

File: /var/www/vhosts/radyoamatorleri.com/httpdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$portfolio_model is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

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Portfolyo

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Üye Ol
Giriş Yap
Decibel

Decibel’i Anlamak ve Kullanmak

Decibel (dB) ifadesini yerinde ve doğru kullanabilmek için önce dB'nin ne olduğunu bilmek ve anlamak gerekir diye düşündüm. Zaman zaman hatalı ifadelerle kullanıldığına şahit oldum, dolayısıyla şöyle kısaca bir gözden geçirme ve hatırlatma yapmakta fayda var.

Decibel, iki takat değerinin orantısının logaritmik olarak ifade edilmesidir. Bir amplifikatörün aktif alet olarak kazancını ya da bir attenuatörün pasif alet olarak kaybını ifade etmekte ve bu değerlerin toplanması ve çıkarılması, devrenin toplamdaki net durumunun ortaya konulması açısından Decibel olarak ifade edilmesi büyük kolaylık sağlar.

1. Kazanç Faktörü ve Hesaplama Zorluğu

Kaskad bağlı iki amplifikatörün birincisinin kazanç faktörü A1 = 275, ikincisinin kazanç faktörü A2 = 55 olsun. Neticede toplam kazanç faktörünü bulmak için çarpma işlemi yapılır:

Giriş >---------- [ Amp #1 ] ---------- [ Amp #2 ] ----------> Çıkış
(A1 = 275)     (A2 = 55)

At = 275 x 55 = 15.125

Böyle bir devrede araya bir de zayıflatıcı (attenüatör) girdiğini düşünürsek hesaplamaların ne kadar karmaşıklaşacağı açıktır. dB kullanımı bu çarpma ve bölme işlemlerini basit toplama ve çıkarmaya indirger.

2. Logaritma ve Bell İfadesi

A.G. Bell’in bulduğu bu hesaplamayı Bell Telefon Şirketi geliştirerek Decibel (dB) birimini ortaya çıkarmıştır. Matematiksel olarak:

  • log (A x B) = log A + log B
  • log (A / B) = log A - log B

Bell değerini yazacak olursak:
Bell olarak kazanç = log A (A burada güç amplifikasyon faktörüdür.)

Bell'in 1/10 değerine ise Decibel denir:

Decibel olarak kazanç (dB) = 10 x log A

3. Voltaj ve Akım Formülleri

Bir devredeki G (gain) kazancını dB olarak yazacak olursak: G = 10 log (Po / Pi) olur. Ohm kanunu uygulandığında ve giriş-çıkış empedanslarının eşit olduğu (Zi = Zo) durumlarda formüller şuna dönüşür:

Birim Formül
Güç (Power) dB = 10 log (Po / Pi)
Voltaj (Voltage) dB = 20 log (Eo / Ei)
Akım (Current) dB = 20 log (Io / Ii)

4. Uygulama Örnekleri

A) Amplifikatör Kazancı:
Giriş Ei = 0.5V, Zi = 200 ohm | Çıkış Eo = 400V, Zo = 600 ohm
Hesaplama sonucu: G (dB) = 53.2 dB
B) Zayıflatıcı (Attenuator):
Ei = 6V, Zi = 600 ohm | Eo = 2V, Zo = 600 ohm
G (dB) = 20 log (2 / 6) = -9.6 dB (Devrede 9.6 dB zayıflatma vardır.)

5. Mutlak Değerler (dBW, dBm, dBV)

dB bağıl bir değerdir. Mutlak değerleri ifade etmek için referanslar kullanılır:

  • dBW: Referans 1 Watt'tır.
  • dBm: Referans 1 mW'tır. (Örn: 5 Watt çıkış = 36.9 dBm)
  • dBV: Referans 1 Volt'tur.

Bu konularda ileride tekrar buluşmak dileğiyle İzmir’den selamlar ve sevgiler.. Her şey gönlünüzce olsun.

73’s de Özhan TA3BQ

Bu yazı, merhum Özhan Önder (TA3BQ) beyefendinin anısına, orijinal metnine sadık kalınarak ve teknik hesaplamaları gözden geçirilerek düzenlenmiştir. Ruhu şad olsun.

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