Fire Alarm
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Simple Fire Alarm Circuits at Low Cost
A fire alarm circuit is a simple circuit that detects a fire and sounds a siren or activates a buzzer.…
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Dummy Alarm Circuit
Have you ever heard about dummy alarm? This is similar to the alarm but this flashes high power Red LEDs…
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Low-Cost Fire Alarm Circuit
The temperature rises in a room where a fire has broken out. A fact is used to detect fire breakout…
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SIMPLE ELECTRONIC CIRCUITS DIAGRAMS
In terms of signals with frequencies over 20 kHz ultrasonic waves are ultrasonic waves or ultrasound call. The use of a 36 kHz or 40…
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Overheat Detector Alarm/Switch Schematic Circuit Diagram
At the heart of this circuit is a precision integrated temperature sensor type LM35 (IC1), which provides an accurate linear…
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Mains Failure Alarm Schematic Circuit Diagram
This circuit was designed to produce an audible alarm when the mains power is interrupted. Such an alarm is essential…
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Smoke Alarm Power Supply Schematic Circuit Diagram
Smoke alarms are extremely useful devices, but they suffer from one significant disadvantage, which is that they’re battery powered. This…
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Car lights alert
Cars have a range of dashboard warning lights, such as the oil pressure warning light or engine management light, which…
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Basic alarm indicator
The most obvious alarm indication is a flashing light.This requires relatively complex electronics. however, to achieve correct flash-ing. Moreover, in…
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