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I have a small doubt regarding over voltage protection. I have an TDA7377 amplifier board that can take a maximum of 18 volts only. I prefer to power it from a 12 volt 2A centre tapped transformer based linear power supply. I can happily work the amp from 12 volts to a safe value of 16 volts...
I am working on a TDA7294 outputted with a 2SC5200 and 2SA1943 pair....The design seems to be very popular and I got it from a website called 320volt.com. After making the PCB successfully, I tested it on a PC SMPS but mistakingly connected 0 volt and negative and this led to a lot of heating...
Thanks Brian...
that solved a lot of confusion....
Hi Klaus,
Your advice prompted me to check the quiescent current of two commercial PA amplifiers, out of curiosity. That 20 Watt megaphone which I mentioned before consumes 70-80 mA of current at standby state. Usually we use it for a long...
Hi friends..I need some help regarding the car amplifier IC TDA7377 and some related doubts. My aim is to amplify a mono signal input from a dynamic mic pre-amplifier/ line input and to drive a 8 ohms 40 W speaker or two of them in parallel. I am basically looking for a portable PA application...
Hi,
I have developed a DS1307 RTC (with backup battery) based 7 segment display clock based on PIC16F628A. It has 3 push switches for hr adjust, min adjust and reset. Everything goes OK when I run it on battery. When I run it on (12V 1A SMPS type)an AC power adapter, it runs smoothly except...
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