Electronics Help Care electronics circuit diagram

Transistor amplifier driver circuit: This is a transformer amplifier driver circuit diagram for making an amplifier. We can use PNP and NPN transistors. Positive and negative transistors need to complete this circuit diagram, like we can use 2SC5200 and 2SA1943. TIP31 and TIP32 are used for the driver transistors. We …

2.1 Circuit diagram using TDA8947J: This is the 2.1 circuit diagram using TDA8947J. This amplifier circuit has 3 audio inputs and 3 audio outputs. One can make 50 watts, and the other 2 are 25+25 watts. We can make one subwoofer and two surrounds. But we must use a low-pass …

Amplifier circuit diagram using STK412-170: This is an amplifier circuit diagram using STK412-170. This board can make a maximum of 180 watts + 180 watts. It needs dual voltage with high and low: positive high volts + positive low volts + Gnd + negative low volts + negative high. It …

5 Band equalizer circuit diagram:  This is a 5-band equalizer circuit diagram for any audio amplifier. Every amplifier needs a bass tone circuit to control the sound and sound quality. This circuit has 5 graphic equalizers to balance the sound as we want. This diagram runs on a single 12-volt. …

2.1 amplifier circuit using LA4630N: This is a 2.1 amplifier circuit using LA4630N. This diagram for 3 audio inputs and 3 outputs. We can make 2.1 using this diagram. making 2 for the left and right speakers, and another for the Bass. Stereo section 9V/3Ω 3W×3, 12V/3Ω 5W×3. Super bus …

Amplifier circuit board using STK403-090: This is an amplifier circuit board using STK403-090. It’s a stereo audio circuit diagram. We can get a maximum of 80+80 watts using a 45-0-45 voltage. needs dual voltage, positive, negative, and ground voltage. 80 watts 6 ohms integrated circuit.  The diagram of this circuit …

4-transistor amplifier board: This is a 4-transistor amplifier board. It’s a stereo transistor audio circuit diagram. This circuit can make 150+150 watts using 35-0-35 volts. Here, 2sc5200 and 2sa1943 transistors are used. This pair of transistors can make 150 watts. 2sc5200 is a positive NPN transistor, and 2sa1943 is a …

DC power supply Adjustable: This is a DC power supply adjustable. We can adjust the minimum 1.2 volts to a maximum of 35 volts and 1.5 amperes. Here, use one LM317T. It’s LM317T STMicroelectronics Linear Voltage Regulators. This IC needs a good quality of heatsink. One 100k adjustable variable. and …

Sound booster pre-amplifier circuit diagram: This is the Sound booster pre-amplifier circuit diagram. This board is for boosting the sound. This board works as a pre-amplifier. This circuit runs with 12-0-12 voltage to 15-0-15 voltage. Every amplifier needs this type of circuit. Normally, it’s included with the bass tone circuit. …

Amplifier circuit using STK403- 450: This is the amplifier circuit using STK403-450. This circuit is for the STK403-000 series. These 3 ICs can be used in this diagram. STK403-430, STK403-440 and STK403-450. STK403- 430 can make 6X20 watts using 30-0-30 voltage. STK403- 440 can make 6X30 watts using 35-0-35 voltage. …