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    • Home
    • Amplifiers
      • 600W MOSFET Amplifier
      • 400W Hifi Mono Amplifier
      • 200W Hifi Mono Amplifier
      • 100W MOSFET Amplifier
      • 100W BJT Mono Amplifier
      • TDA2030 Stereo Amplifier
      • TDA7294 Mono Amplifier
      • LM3886 Hifi Audio Amp
      • 150W Hifi QC Amplifier
      • 100_100w Stereo Amplifier
      • TDA7265 2.1 Car Amplifier
      • Speaker Protection Board
    • BT & SUB
      • Hi gain bass treble board
      • Subwoofer Low Pass Filter
      • 3 way active crossover
      • Hifi Pre Amp BT PCB Board
    • Power Supply
      • Compact Regulated supply
      • Multiuse Power Supply
      • 10A Power Supply Board
      • 35A Power Supply Board
      • 6v 12v Emergency Light
      • 12v Auto Day Night light
    • Components
      • Transistor Price list
      • Diode and BridgeRectifier
      • Capacitor Price List
      • Integrated Circuits price
      • Misc Components
Vasp Electronics

Contact us:- +91 9424930058 ( Whatsapp )

  • Home
  • Amplifiers
    • 600W MOSFET Amplifier
    • 400W Hifi Mono Amplifier
    • 200W Hifi Mono Amplifier
    • 100W MOSFET Amplifier
    • 100W BJT Mono Amplifier
    • TDA2030 Stereo Amplifier
    • TDA7294 Mono Amplifier
    • LM3886 Hifi Audio Amp
    • 150W Hifi QC Amplifier
    • 100_100w Stereo Amplifier
    • TDA7265 2.1 Car Amplifier
    • Speaker Protection Board
  • BT & SUB
    • Hi gain bass treble board
    • Subwoofer Low Pass Filter
    • 3 way active crossover
    • Hifi Pre Amp BT PCB Board
  • Power Supply
    • Compact Regulated supply
    • Multiuse Power Supply
    • 10A Power Supply Board
    • 35A Power Supply Board
    • 6v 12v Emergency Light
    • 12v Auto Day Night light
  • Components
    • Transistor Price list
    • Diode and BridgeRectifier
    • Capacitor Price List
    • Integrated Circuits price
    • Misc Components

100 + 100 watt stereo amplifier board price list

100w + 100 Watt Stereo Amplifier PCB

100w + 100 Watt Stereo Amplifier Board

100w + 100 Watt Stereo Amplifier Board

100+100 Watt Stereo Amplifier PCB

Price Rs 199.00 each

buy now

100w + 100 Watt Stereo Amplifier Board

100w + 100 Watt Stereo Amplifier Board

100w + 100 Watt Stereo Amplifier Board

100 + 100w stereo amplifier board

100+100 Watt Stereo Amplifier Assembled Board

Price Rs 1399.00 each

buy now

100 + 100 Watt Stereo Amplifier Photo Gallery

100 + 100w stereo amplifier board solder side

    "Caracal" 100 + 100 Watt Stereo Amplifier Board

    Intro

    This is a complete Stereo Amplifier in one board

    You have to just add transformer and it is ready to go.


    The Big Capacitor & Rectifier power supply on this board has a Dual DC output connector ,

    So you can connect Subwoofer amplifier board and make a High power 2.1 system.


    input can be given from USB / Bluetooth player or Mobile phone or any type of CD / DVD / PC / Laptop / LCD LED TV.

    Features of 100 + 100 Watt Stereo Amplifier Board

    • High Power  - 100 Watt per channel Dynamic output power with 4Ω speakers
    • Low THD + N -   Less then 0.1%  Total Harmonic Distortion at Full power output.
    • Supply Rectifier - on board full wave bridge rectifier and filter capacitors, connect your transformer directly to the amplifier board.
    • Transformer Recommended  - use 24 0 24 VAC 5 - 8 Ampere Transformer.
    • Standard Components - All components used are available online or at your local electronics store. 
    • No SMD components used - Only through hole components used, making soldering and replacement hassle free.  
    • Low cost  - This amplifier can be made in a fraction of cost compared to similar amplifiers available in market. 

    Brief Description of 200w Stereo Amplifier circuit :-

                                                            CLICK HERE to download 200w Stereo  amplifier circuit diagram 


    Left Channel Working is described below, the other channel works the same.


    Power Supply Section - 


    Power supply section consist of Bridge Rectifier D1 which rectifies AC coming from transformer, the rectifierd DC then filterd by Reservoir capacitors C19, C20, C21, C22.

     

    DC output jack is provided to connect other amplifire boards for making multi channel Amps.


    Input Stage


     Input stage works as a  transconductance amplifier (voltage in - current out).This stage consist of Long Tailed Pair (LTP) made of Q1 & Q2 working as differential amplifier.

    Input signal received at the base of Q1 is amplified and sent to VAS from collector.

    Negative feedback (NFB) received at the base of Q2 from output determines overall gain and balance of the amplifier. Current is supplied to the LTP by resistor R4.


    Constant current source is made of Q18, R4,D3 which provided current to input pair.

    In simple words input signal is amplified by the input pair Q1 & Q2 and sent to VAS for further amplification.

    Voltage Amplification Stage (VAS)

    As the name suggests, all the voltage gain of the amplifier is achieved in VA Stage.  

    Signal received from input stage at the base of Q3 is  Voltage amplified and sent to the base of driver transistor Q5.Current is supplied to VAS by resistor R9 & R10.

    Biasing circuit is made of transistor Q4, which works as voltage divider. With preset RV1, base current of output transistors can be precisely adjusted.

    Important to note that the biasing transistor Q4 & driver transistor Q5 can be tied together for better thermal tracking.

    In simple words signal received from input stage is amplified by Q3 & sent to output stage.

    Output Stage ( OPS )This circuit has Class AB output stage, so each half of the signal is amplified by each  NPN and PNP output transistors.

    Driver Transistors Q5 & Q6 work as buffers to prevent excessive loading of VAS and also provide input to the output transistor Q7 and Q8 respectively.

    Output Topology is Complementary Feedback pair which has improved linearity and  better thermal tracking.

    Zobel Network - made of R15 & C6, provides protection against high frequency oscillations.

    In simple words signal received from VAS is given to the output transistors via driver transistors. Output transistors conduct high current to drive the speakers load. 

    Compatible / Replacement Part no. with Datasheet download links.*

      Transistors 

    • Q1, Q2, Q4 - BC546-547-548-549-550


    • Q3, Q6          - BD140, MJE350, 2SA1220, 2SA1381


    • Q5,                 - BD139, MJE340, 2SC2690, 2SC3503


    • Q8                 - 2SC5200, TTC5200, 2SC5200N, NJW0281G, TIP35C


    • Q7               - 2SA1943, TTA1943, 2SA1943N, NJW0302G, TIP36C


    • D1 - D15XB40, D15XB60, D25XB40, GBJ2510, GBJ3510


    * - Always use complementary NPN-PNP pairs. 

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