Electronics Help Care Amplifier circuit diagram 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 heatsink. One 100k adjustable variable. and a 1k resistor for feedback voltage.
Pre-amplifier circuit diagram:
This is a pre-amplifier circuit diagram. Every amplifier needs this type of circuit diagram. This circuit makes the sound good. It has one main volume, a low part, a mid-range, and a high. This diagram runs using a 12-volt system only. It’s a mono board/ for stereo needs a dual board.
The amplifier circuit diagram is here
2n3055 and 2n2955 transistor amplifier:
This is one of the best 2n3055 and 2n2955 transistor amplifier circuit diagrams. This is a 1000-watt circuit diagram. Here in this circuit, we can use 35-0-35 voltage to 70-0-70 voltage. If we use dual voltage, then it will be good. For the driver circuit, you can use 35-0-35, and for the transistor, 70-0-70 voltage. like 70-35-0-35-70 voltage.
This is the 150-watt amplifier circuit diagram using 2N3055 and MJ2955. We can use 35-0-35 voltage and 5 amperes. We can get the output to be 150 watts. It’s a mono board. For stereo, there is a dual circuit board. We can use another transistor. Here are the needed PNP and NPN transistors. Use another transistor following BCE.
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