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220 V LED Indicator Circuit

Last Updated on May 4, 2020 by Admin Leave a Comment

LED MAINS INDICATOR

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 […]

Filed Under: Indicators

Logic Tester for TTL, CMOS and All Logic Families

Last Updated on April 18, 2020 by Admin Leave a Comment

logic tester

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 […]

Filed Under: Indicators

Designing Large LED Dispay Circuit

Last Updated on April 8, 2020 by Admin Leave a Comment

jumbo display 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 […]

Filed Under: Lights and Lamps, Indicators

Universal LED Bar Graph Indicator Circuit

Last Updated on April 8, 2020 by Admin Leave a Comment

universal bar graph

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 […]

Filed Under: Indicators, Meter and Tester Circuits, Signal Processor

Automatic LDR Switch Circuit with Flashing Lamp

Last Updated on November 27, 2024 by Admin Leave a Comment

twilight switch

This simple flashing LED light will begin flashing as soon as darkness sets in, and will shut off in the morning when day light arrives back. The operation of the […]

Filed Under: Indicators, Security and Alarm Circuit

Heatsink Temperature Monitor Circuit

Last Updated on April 8, 2020 by Admin Leave a Comment

heatsink monitor

Heatsinks are a necessary inclusion in circuits which are rated to work with high wattage and high current supplies. The heatsink is installed on devices so that it draws the […]

Filed Under: Indicators, Protection Circuits, Temperature Controller

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