Many DIY projects require a small Power Supply. The 78XX family is ideally suited for this job, and with this little PCB you can easily build small Power Supplies for virtually every application. The circuit is very simple: The Alternating current is applied to X1 and rectifies by B1. It charges a large Capacitor C1 [...]
rain+detector+circuit+diagram
Laser based projects acclimated to be expensive, until the development of solid accompaniment lasers. This activity is advised for the access akin laser experimenter. The ambit allows any two computers with consecutive (RS-232) advice adequacy to acquaint over 200 meters application a laser beam. A low amount transmitter alone ambit is additionally presented actuality for [...]
Fire Alarm Circuit Using LDR Here is a simple fire alarm circuit based on a LDR and lamp pair for sensing the fire.The alarm works by sensing the smoke produced during fire.The circuit produces an audible alarm when the fire breaks out with smoke. When there is no smoke the light from the bulb will [...]
18w Audio Amplifier with Power Supply Amplifier parts: P1_____________22K Log. Potentiometer (Dual-gang for stereo) R1______________1K 1/4W Resistor R2______________4K7 1/4W Resistor R3____________100R 1/4W Resistor R4______________4K7 1/4W Resistor R5_____________82K 1/4W Resistor R6_____________10R 1/2W Resistor R7_______________R22 4W Resistor (wirewound) R8______________1K 1/2W Trimmer Cermet (optional) C1____________470nF 63V Polyester Capacitor C2,C5_________100µF 3V Tantalum bead Capacitors C3,C4_________470µF 25V Electrolytic Capacitors C6____________100nF [...]
LM317T Voltage Regulator with Pass Transistor The LM317T output current can be increased by using an additional power transistor to share a portion of the total current. The amount of current sharing is established with a resistor placed in series with the 317 input and a resistor placed in series with the emitter of the [...]
