The Battery Low Voltage Alarm circuit has a very significant purpose aside from its basic design. It alerts you when a battery is about to run out so you can […]
Easy to Build Stereo Amplifier Circuit
Structured on the IC TDA 1521, this straightforward stereo audio amplifier design uses just a few extra passive components and produces an impressive 12 + 12 watts of sound output. […]
Precision Temperature Alarm Circuits using Op Amps
This article explores the workings a couple of highly accurate op amp-based temperature alarm circuits. In essence, a temperature alarm circuit is a device that is intended to sense a level of […]
High Low Temperature Alarm Circuit using Transistors
This high/low temperature indicator circuit uses only BJTs and the temperature is being monitored by a thermistor. This straightforward temperature alarm circuit is set to sound an alert (either vocally […]
Remote Control Circuit for 220V Appliances
With a compact control device, home automation, sometimes referred to as domotics, enables us to turn on and off a variety of items, including entrance gates, shutters, curtains, TVs, hi-fi […]
Precision Solar Battery Charger using Comparator
Any solar panel may be used to maximize battery charging with this compact and accurate comparator-based solar battery charger configuration, which also guards against unintentional overloading. With the longer battery […]