Sunday, July 29, 2012
Sunday, June 3, 2012
This schematic diagram is a light-operated, remote-controlled solidstate switch circuit to handle lamp. While in darkness, the resistance of Light Dependent Resistor (LDR) is extremely hight, it shoots up to megohm range. As a result, the triac isn't going to have gate drive and therefore it doesn't conduct.
Friday, April 20, 2012
Here the very simple and easy build gold detector circuit. The circuit capable to sense gold or metal or coins from a distance of about 20cm, depending on the size of the object to detect.
The circuit oscillates at about 140kHz and a harmonic of this frequency is detected by an AM radio. You can simply tune the radio receiver until a squeal is detected.
This is digital clock schematic diagram . This circuit is quite complex and quite difficult for a newbie because this circuit uses IC with...
This is inexpensive inverter circuit which able to convert 12V DC become 220V AC. IC CD4047 is use to generate the square wave of 50hz and...
Here the 500 Watt power inverter schematic diagram . Designed by: Syed Ashad Mustafa Younus Revised by: Ronnie B. Tabanao Click the image...