Position: Index > Phone Circuit >

Wireless infrared headphones receiver principle

2016-02-11 16:35  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.

This article describes a wireless infrared headphones receiver principle. The principle is simple there, we recommend that combine text carefully read the complete schematic. A photodiode Dl feeds high gain IR remote control preamp 1C, a  CA3237E . U2 is a PLL FM detector tuned to around 100 kHz. The detector output is amplified by U3 and it can drive a speaker or a set of headphones. Better for you grasp this principle, then we briefly CA3237E. The CA3237E RF amplifier is a discrete hybrid design, which uses thin film manufacturing processes for accurate performance and high reliability. This single stage GaAs FET feedback amplifier design displays impressive performance characteristics over a broadband frequency range. An RF choke is used for DC power supply decoupling. Both TO-8 and Surface Mount packages are hermetically sealed, and MIL-STD-883 environmental screening is available. to better grasp this principle, it is recommended to read several times on this principle.

 

VN:F [1.6.9_936]

 


Reprinted Url Of This Article:
http://circuits.radio-electronics.co/audio/wireless-ir-headphone-receiver/