Electronics Help Care Amplifier circuit diagram

Music light effect: This is a music light effect level circuit diagram. It looks like an old VU meter. Now we use the down-to-up music level light. Every amplifier needs this level circuit. It’s not only the beauty. It’s also for calling the sound level. This circuit runs on 12 …

Transistor amplifier circuit diagram C5198: This is a transistor amplifier circuit diagram C5198 and A1941. This pair of transistors can make 50 watts. It’s a mono audio board. For stereo needs dual board. we can use 20-0-20 voltage to 40-0-40 voltage and 3 amperes. C5198 is positive and A1941 is …

Bridge mode dual power amplifier: This is the bridge mode dual power amplifier. Here we can use TDA2030 or TDA2050. This circuit diagram can make a maximum of 35 watts. Here needs a dual voltage. positive, negative, and ground voltage. minimum 10-0-10 voltage to 18-0-18 voltage can use. TDA2030 runs …

This is the Preamplifier circuit with a graphic equalizer for the amplifier. This diagram runs on 12 volts. It’s a stereo diagram. Treble, midrange, and bass can be controlled using this board. Every amplifier needs this type of circuit to control the sound quality.  The diagram of this circuit is  …

Amplifier circuit using TDA2030: This is the amplifier circuit using TDA2030. We can also use TDA2040 and TDA2050. TDA2006. Many ICs can use this diagram; 2030 AND 2050 are popular ICs. Both diagrams are mono. In this diagram, we can use a 10-0-10 voltage to an 18-0-18 voltage. The voltage …

Amplifier circuit using TDA2005: This is the amplifier circuit using TDA2005. Here are three diagrams using the same IC. 2 diagrams are stereo. One is the bridge mode. The stereo diagram makes 10+10 watts. And bridge mode makes 20 watts. The voltage should be no more than 15 volts.    …

Amplifier circuit diagram using TDA2005: This is an amplifier circuit diagram using TDA2005. It’s a complete audio circuit board. mono board. This board can make 25 watts in bridge mode. 12-volt-operated audio board. It’s also with a pre-amplifier and bass treble controller. Here are 3 adjustable volumes: 1st one for …

Amplifier circuit diagram using ECG1355: This is an amplifier circuit diagram using ECG1355. ECG1355 hybrid power amp module. probably 35 years old IC. This board can make 100 watts. It’s a mono audio board. The stereo needs a dual circuit. Here needs a minimum of 30 volts to 60 volts. …

Amplifier circuit diagram using STK490-310: This is an amplifier circuit diagram using STK490-310. This board can make 20W+20W to 75W+75W. The voltage is 35-20-0-20-35 to 50-30-0-30-50. STK490-040 TO STK490-110 voltage should be 35-20-0-20-35 volts. and STK490-140 to STK490-340 voltage should be 50-30-0-30-50 volts.  We can use STK490-040,STK490-070,STK490-090,STK490-110,STK490-140,STK490-220,STK490-310,STK490-340 ic in this …

Amplifier circuit diagram using STK4199MK2: This is an amplifier circuit diagram using STK4199MK2. It’s a 2.1 audio circuit. It has 3 inputs and 3 outputs. Left speaker + Right speaker and the Subwoofer output. Voltage needs 55-35-0-35-55. Positive voltage high and low. negative voltage, high, and low. This diagram has …