This low battery alarm circuit using IC 555 was initially used in conjunction with an automated mains/battery DC power supply to power transceivers. Having the power supply usually at 13.6 […]
Battery Low Voltage Alarm Circuit using NAND Gates
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 […]
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 […]
26 Best Alarm Circuits Explained
In this article we will discuss about many useful and best alarm application circuits. High Power Alarm Driver Circuit In such a circuit, a less powered SCR is employed to […]
Two Tone Alarm Circuit using Op-Amps
Sound alarm generators are essential in several applications, for example fire and burglar alarm techniques. This specific circuit creates a infiltrating two tone alarm signal possessing an output power of […]