The circuit in the figure shows a low-cost solution based on a transistor switch (Q1). The transistor is off under normal conditions, when the differential amplifier built around U1 amplifies the ...

Task8-week-4-Switch-Circuit-Using-Transistor-and-Pushbutton-9V-Supply This project demonstrates how to build a simple latching power switch circuit using an NPN transistor and a pushbutton, powered by ...

Basic Load Switch A load switch is comprised of two main elements – the pass transistor and the on/off control segment. The pass transistor is most commonly a P-channel or N-channel MOSFET that passes ...

Q1 is a simple PNP transistor acting as a pull-down switch until C1 charges and switches off Q1. That should spin up the SATA drive and then surrender pin 11 for drive activity usage. Is this ...

A transistor tester can be a handy addition to your electronics workbench. This design is a handy solution. Two versions of the circuit are provided.

A very simple but highly efficient combination lock circuit is shown in the figure. Any type of on/off switches can be used, varying from commercially available inexpensive types ...

This is a very simple touch light switch circuit that uses the 4011 IC, one transistor and a relay. The C1 capacitor stores the switching state at a certain time and is charged or discharged according ...