As seen in the above schematic, a 5-V DC supply from the USB connector (USB) is routed to two 10-Ω/5-W power resistors (R1 and R2) through an SPST switch (S1 ... been six weeks since I’ve looked at an ...

He identified the voltage regulator outputting 2.8 V, desoldered the red wire, and extended it to install the switch. On his first try, he successfully drilled a spot for the SPST switch.

Much simpler circuits, though, are left at the mercy of a SPST switch; if you forget to turn a flashlight off, it will be dead next time you need to use it. Wanting an auto-off circuit simple ...

CIT Relay & Switch’s UL/CUL-recognized VM3 snap-action switches offers a choice of a single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) circuit. CIT Relay & Switch’s UL/CUL ...

Expanding its CMOS switch family, the company has introduced new devices consisting of a pair of SPST switches--the ADG741 and ADG742--and a SPDT switch--the ADG749. With a logic input of one ...