Pic Led Driver Circuit

The image to the right shows an example.

Pic led driver circuit. 230v led driver circuit principle. In this circuit we will drive an led directly from 230v ac mains supply. Hi i have realized the circuit high power led circuit 1 from dan goldwater but with 7x cree xml leds and with bc337 as q1 and fqpf2n80 as q2 but it doesn work. I would like to obtain a current source around 700ma.

Another interesting led circuit is the diy led light bulb. Here is a 23v0v led driver circuit. In this we designed an led light bulb and used it as a regular bulb. Bipolar junction transistors need base current and sufficient positive voltage to the collector in order to provide amplification.

It is very dangerous to use 230v ac supply on breadboard. The main component is the x rated ac capacitor which can reduce the supply current to a suitable amount. To wire a series circuit like the one shown the positive output from the driver connects to the positive of the first led and from that led a connection is made from the negative to the positive of the second led and so on until the last led in the circuit. The basic principle behind the 230v led driver circuit is transformer less power supply.

When the switch of the circuit is open no current flows to the base of the transistor. I expected 0 5v on r3 and i obtained 0 250v with r3 0 81ohms.