This Voltage Regulator with Shutdown Digital Circuit Diagram is very interesting, it uses an LM317 regulator circuit that allows external control in a dangerous situation to turn off the regulator output in response to the trigger. The circuit is configured to output five volts suitable for all TTL logic circuits. The selected values of R1 and R2 set the output to the required 5V, R2 can be changed to other values other output voltages.
In unfavorable external trigger switches the transistor instantly putting R2 shorted to ground, knocking the output to zero volts.As the circuit is equipped with the function off by an external trigger, it is extremely suitable for many critical applications and for use in Arduino projects.
Voltage Regulator with Shutdown Digital Circuit Diagram
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