This is a transistor time delay circuit based on learning the discharge and charge of the C and transistor. or we called Capacitor Time Constant This can be used as a timer circuit and applied to OFF electrical appliances. The application has also put relay instead of LED can be enabled. This circuit is working … Read more
This is a digital volume control circuit that Can be applied to the normal volume of a power amplifier. When press switch S1 adds up the volume and press switch S2 to reduce the volume down. There are three circuit ideas for you. 555 Digital volume control IC1 is a 555 CMOS Timer Single IC … Read more
The digital clock circuit board using LM8365,alarm and relay control, alert 2 times in 24 hour,backup battery power outage. Show dates, months or seconds […] Read more
This is daylight sensor switch circuit, for control load turn on when have sunlight. use simple circuit LDR,transistor,relay and can use with 12V supply […] Read more
The digital clock circuit that electronic amateurs are most interested. And The clock ICs that most popular are LM8361, MM5387, […] Read more