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    Circuits DIY
    https://www.circuits-diy.com › push-button-on-off-switch-using-transistors

    Push Button ON-OFF Switch Using Transistors - Circuits DIY

    How to build a push button on off relay circuit?
    To Construct Push ON Push OFF Circuit we don’t need to depend on Microcontrollers or timer ICs, we can built Simple Single Push Button ON OFF Relay Circuit by using few transistors and a Capacitor. Here Push button ON OFF circuit Constructed to turn ON OFF Electric load connected with the Relay. We can construct this circuit in common PCB.
    theorycircuit.com
    Push Button ON-OFF Switch Using Transistors - Cir…

    For a detailed description of pinout, dimension features, and specifications download the datasheet of 2N3906

    Circuits DIY

    For a detailed description of pinout, dimension features, and specifications download the datasheet of 2N3904

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    This circuit operates on a battery of 9 to 12 volts DC. Initially, the circuit will remain in the off state because the push button has not been pressed and no current is flowing through the transistor. When you push the button, the current will flow through the base of transistor 2N304 which will turn it on. Now the current flowing through this tr...

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