Notes This power supply has adjustable and charger output. The charger circuit can be use for cellular phone. The adjustable output serves as multipurpose power supply. It can handle a 1 ampere current. The 317 must have a heat sink. Parts List Semiconductor: LM 317 – 1pc LED – 1pc 1N 4001 – 8pcs Capacitors: [...]
pemancar+fm+88 108+mhz
2 Way Cross-Over 3500 Hz (bass and treble) This is 2 way cross-over for your speaker system. This circuit will handle 2 speaker that are woofer (low frequency) an tweeter (high frequency). The result will shown as below picture: Here the schematic diagram of the circuit:
Electronic system is designed to operate from a supply voltage, which is usually assumed to be constant. A voltage regulator provides this constant DC output voltage and contains circuitry that continuously holds the output voltage at the design value regardless of changes in load current or input voltage, assuming that the load current and input [...]
Controlled by indoor and outdoor temperatureSimple, high reliability design This circuit is intended to control a heating system or central heating plan, keeping constant indoor temperature in spite of wide range changes in the outdoor one. Two sensors are needed: one placed outdoors, in order to sense the external temperature; the other placed on the [...]
bass booster circuit Bass Boost is now in good health … If you’re driving, gut-vibrating pulse of disco, or a continuous line of soft rock bottom, hard, or relaxed. One way to get the bass boost its modern without running to buy a piece of expensive capital works is to use a Bass Booster between [...]
