In this post I have explained a battery backup time indicator circuit for monitoring the battery power usage by the connected load and for estimating the approximate remaining backup time of the battery. The idea was requested by Mr. Mehran Manzoor. Circuit Objectives and Requirements I want a circuit which shows remaining time of backup […]
Indicator
3 LED Battery Level Indicator Circuit
The proposed 3 LED battery level indicator can be typically used for monitoring a 12 V lead acid battery charge level, through 3 distinct LED illumination. The entire circuit is built using just a couple of BJTs , a few zener diodes, resistors and LEDs. Different Ways to Check Battery Voltage A hydrometer is perhaps […]
2-Pin Motorcycle Turn Signal Flasher Indicator Circuit with Buzzer
A simple construction procedure of a motorcycle electronic 2 pin turn signal indicator with beeper circuit has been thoroughly I have explained in this article. Normally, the electro-mechanical types of turn signal indicators are not reliable due to low consistency and vulnerability to changing weather conditions. The present design easily withstands the above parameters and […]
Car Turn Signal Flasher Circuit with Lamp Malfunction Indicator
In this post I have explained an automotive/car turn signal indicator circuit idea with a built-in load malfunction indicator, meaning an additional LED lamp fitted on the dashboard which would warn if any of the side indicators went bad or fused. The idea was researched and requested by Mr. Abu-Hafss. The Circuit Concept I have found a transistor-based flasher including a […]
Car Blown Brake Light Indicator Circuit to Detect Broken Bulb Filament Tail Light
In this post I have explained a simple fused or blown car brake light indicator circuit using a single IC 555 and a few other passive components. The idea was requested by Mr. Joel Bayongasan Technical Specifications You innovations are great! Thanks for this blog. May I request something please? I was searching for a […]
Ultrasonic Fuel Level Indicator Circuit
An electronic device or circuit which detects and indicates the various fuel levels in a fuel tank without a physical contact, through ultrasonic waves, is called an ultrasonic fuel level sensor In this post I have explained how to build a simple fuel tank level indicator circuit using Arduino and ultrasonic sensors. In every vehicle […]