This battery monitor circuit can be used to monitor the charge level of a battery in 3 different steps, indicated by 3 separate LEDs. Just three LEDs are incorporated to […]
LED Voltage Monitor Circuit
A well balanced power supply is completely necessary for the precise functioning of computers and TTL circuits. A voltage fluctuation of 10% is undoubtedly not bearable, it is therefore advisable […]
220 V LED Indicator Circuit
This LED circuit can be used to indicate the presence of 220 V mains AC supply, without using a transformer. The long life of LEDs make them extremely appropriate for […]
Logic Tester for TTL, CMOS and All Logic Families
The circuit described here works as a logic tester for TTL circuits, CMOS circuits as well as other logic families with similar behavior. The circuit is capable of indicating an […]
Designing Large LED Dispay Circuit
First of all, this project will not seem interesting to every reader. But, this has many possible applications. This is a seven segment display, with a diameter of 280x140mm. The […]
Universal LED Bar Graph Indicator Circuit
This universal pointer or LED bar graph indicator circuit can be used with any kind of input sensor that delivers a exponentially varying voltage. This can be for example from […]
