The Capacitor-fed Power Supply
The capacitor-fed power supply is sometimes referred to as a TRANSFORMERLESS POWER SUPPLY. This article is going to shock you ...
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Tag: Circuits
Digital Countdown Timer
This circuit provides a visual 9 second delay using a 7 segment digital readout LED. When the switch is closed, ...
Read more9 Second Timer
This circuit provides a visual 9 second delay using 10 LEDs before closing a 12 volt relay. When the reset ...
Read moreShort Time Relay on-off
The two circuits below illustrate opening a relay contact a short time after the ignition or ligh switch is turned ...
Read moreTime Delay Circuit using LM339
In this circuit a LM339 quad voltage comparator is used to generate a time delay and control a high current ...
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