One Shot Circuit
Which circuit is also known as a one shot circuit?
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One shot circuits are the monostable multivibrator circuits. They use bipolar junction transistors or npn transistors in common emitter config.
The circuit has a stable state in which it remains and conducts in ON position. When the input bias is short circuited to the ground by a switch, the transistor switches off. The circuit enters unstable state.
When the switch is opened at the base of transistor again, the base voltage raises through charging of a capactor through a resistor. Then after a time duration determined by the time constant of RC, the transistor conducts again and the circuit enters stable state.
Thus the monostable multivibrator can generate 1 pulse of specified width when triggered at the input by a pulse.
That is why it is called a one shot circuit. These are used in timer circuits.
The circuit has a stable state in which it remains and conducts in ON position. When the input bias is short circuited to the ground by a switch, the transistor switches off. The circuit enters unstable state.
When the switch is opened at the base of transistor again, the base voltage raises through charging of a capactor through a resistor. Then after a time duration determined by the time constant of RC, the transistor conducts again and the circuit enters stable state.
Thus the monostable multivibrator can generate 1 pulse of specified width when triggered at the input by a pulse.
That is why it is called a one shot circuit. These are used in timer circuits.
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