Use of power amplifier IC

[Photos] The post-stage part of the electronic frequency divider before and after the amplifier (2)

[Photo] 800-watt MOSFET power amplifier

[Photo] Earphone and speaker protection circuit

[Photo] The original picture of the transmitter with frequency display

[Photo] "Bear" subwoofer

Design of remote wireless key based on automotive application

Application of ISD4004 Voice Chip in Voice Station

[Photo] 6-8W dual audio power amplifier circuit HA1394

tda7294 power amplifier circuit diagram

[Photo] Polished FM6688 radio ((TDA7088T)

Discussion on data transmission protocol on GPRS network