A few months back, a dynamic voltage-controlled thermistor SPICE model was presented on planet analog, A Multi-Simulator NTC Thermistor SPICE Model With Temperature Driven By a Voltage With the help ...

This remote controlled switch circuit can control AC loads such as lights, fans etc through the remote handset of TV. It uses the 555 timer in the bistable mode. In the bistable mode output IC555 ...

A timer or pump-off controller (POC) can improve overall beam-pump efficiency for a well with a pump capacity greater than its production capacity. More than 400,000 wells in the U.S. operate with ...

The defrost termination/fan delay control is a temperature-activated, single pole-double throw switch controlled with a remote sensing bulb (Fig. 1). The control can be an adjustable type. One example ...

The product marketing teams over at APC by Schneider Electric were kind enough to point out to me yesterday that THEY, too, have introduced surge protector this year that is endowed with power-saving ...

Single-phase and 3-phase AC squirrel cage induction motors need some type of control circuit to initiate a start or stop function. The two types of ladder control circuits commonly used are the 2-wire ...

In Part 1 of this two-part series, we presented a 3-phase, 480VAC motor circuit with its associated controls (Figure). We stepped through a logical, systematic approach to troubleshoot the main power ...