Electronics Help Care Amplifier circuit diagram
This is a subwoofer amplifier circuit board. This diagram makes only the bass for the amplifier. It’s a pre-amplifier diagram. This diagram runs on 12 volts. only positive and negative voltages. It’s a mono diagram. It has two adjustable volumes. One is the volume, another is the bass frequency. mono audio input and mono audio output.
This circuit can be used with any type of amplifier to make only bass output.
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 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, and 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.
Amplifier circuit using stk4191:
This is an amplifier circuit using stk4191. This board can make 100 watts + 100 watts. it’s a stereo diagram. we can use 20-0-20 voltage to 35-0-35 voltage and 5 amperes. We also can use stk4141 to stk4191 in this diagram. This is an Amplifier circuit diagram using stk4191. this board can make 100 Watts + 100 Watts. We can use 20-0-20 voltage to 35-0-35 voltage. this is a stereo board. In this circuit, we can use STK 4141 to STK 4191. here need dual voltage. positive negative and ground voltage. Features
The (STK4191) series STK4102 and STK4101V series
(the high-grade type) are pin-consistent in the output range of 6W to 100 W and enable easy diagrams.
The Small-sized package whose pin assignment is the same
as that of the STK4101 series
The Built-in muting circuit cut off many kinds of pop noise
The Greatly reduced heat sink due to the substrate temp is 125°C
The best cost performance.
Please use a strong voltage. Always use the best quality transformer diode and capacitor to produce good voltage. Here, a minimum of 2200uf and 50 voltage capacitor. The diode will be a minimum of 6 amperes. This board doesn’t have any output protection system, so it needs speaker protection to protect the speaker. If the IC gets a short circuit, then the protection circuit will protect the speaker from being burned. The protection circuit diagram
We have another post for you. like Amplifier circuit 200 watts
Transistor circuit for an amplifier
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