Electronics Help Care electronics circuit diagram

Switch on-off using the password: This is a circuit to switch on or off using a password. this circuit is so simple to make. here use 4 rotary switches to make passwords. every switch has 10 outputs. every output can make a different number. we can set every output in …

security light circuit diagram: This is the security light circuit diagram for the office hostel or the factory. every place we can use this circuit to control the lights. they can switch on/off the lights but if the office wants they can’t off the lights. all lights depend on the …

Amplifier circuit using stk4141: This is an Amplifier circuit using stk4141. this is a stereo diagram. we can use a maximum of 24-0-24 voltage on this board. this diagram can make 50+50 watts. this type of circuit makes a musical sound. per channel is 50 watts. this is the circuit …

12 voltage amplifier circuit: This is the 12-voltage amplifier circuit diagram. we can use a 12-volt battery. for this, we can use it in the car. this diagram can make 50 watts+50 watts. we can use 8 volts to 18 volts. this is a stereo diagram. here use 4 tda2003 …

Bass tone circuit : This is the Bass tone circuit board for the audio amplifier. every amplifier needs this circuit. it’s without a preamplifier. it’s only the audio graphic to control the sound quality. we can make the sound as we want.  here, I used 3 volumes. all volumes are …

Stk4231 Circuit Diagram: This is the Stk4231 Circuit Diagram. this is a 100Watts+100Watts amplifier. this Stk IC can make 200 Watts. we can use a maximum 50-0-50 voltage. it’s a stereo audio amplifier.   Circuit diagram for this amplifier   It needs a strong voltage to make a strong watt.  …

how to make transformer for the amplifier: Transformer making is important to learn electricity and electronics. this is the way to transition the voltage. we can make step-up voltage and step-down voltage by using this transformer. here we are going to make a step-down  with 50-0-50 voltage. how to make …

speaker protection circuit diagram: This is the speaker protection circuit diagram. this is a stereo speaker circuit diagram. 12 voltages are needed to run this circuit. it’s an easy diagram. this board needs to save the speaker.  Thanks a lot for being with us. If you want another post then …

2 transistor amplifier circuit diagram: This is 2 transistor amplifier circuit diagram. this circuit can make 150 watts. here we can use 35-0-35 voltage. needs dual voltage positive negative and ground voltage. this is a mono audio circuit board. if we need stereo then we have to use 2 circuits.  …

Class D amplifier circuit diagram: This is a class d amplifier circuit diagram. this circuit can make 500 watts. this is a class D-type circuit diagram. here,  used mosfet. we can use here a maximum 70-0-70 voltage and a lower 25-0-25 voltage. It needs dual voltage. positive negative and ground …