amplifier circuit schematic

Electronics Help Care June 12, 2025 Amplifier Diagram

Amplifier circuit schematic:

This is the amplifier circuit schematic. 200 watts audio amplifier diagram. It’s a mono audio diagram for an amplifier. Here we can use 50-0-50 voltage and 5 amperes. For stereo needs, a dual diagram. This is an amplifier circuit using 2SC2922 and 2SA1216.

The transistor 2SC2922:
The material of the transistor is Si
The polarity is NPN
The maximum Collector Power Dissipation is 200W.
The maximum Collector-Base Voltage is 180V.
The maximum Collector Current max is 17A.
The max operating Junction Temperature is 150 °C.
The transition Frequency is 25 MHz.
The Current Transfer Ratio (hFE), MIN is 33.

The transistor 2SC1216:
The material of the transistor is Si
The polarity is PNP
The maximum Collector Power Dissipation is 200W.
The maximum Collector-Base Voltage is 180V.
The maximum Collector Current max is 17A.
The max operating Junction Temperature is 150 °C.
The transition Frequency is 25 MHz.
The Current Transfer Ratio (hFE), MIN is 33.

speaker protection circuit diagram:

This is the speaker protection circuit diagram. This is a stereo speaker circuit diagram. 12 volts are needed to run this circuit. It’s an easy diagram. This board needs to save the speaker.

speaker protection circuit

We can also use 2SC5200 transistors. This circuit doesn’t have speaker protection. Here is a speaker protection circuit. Here is the link to get the speaker protection circuit. The diagram is here

This is the Speaker protection circuit diagram. It can protect our Speaker from the burn. If the amplifier has any problem, then this circuit can save our soundbox. Normally, when the transistor makes a short circuit, the voltage comes out from the speaker output line then this circuit protects that voltage. This circuit should not allow any direct voltage to be sent to the speaker. This circuit is very important for protecting the speaker.