Electronics project

 The presented circuit is designed to convert 9 volts DC to 1.5 volts DC.  This circuit is built using transistor BC548.   Two resistance 33k ohm and 10k ohm have been used in this circuit for voltage balancing.   You can connect a wall clock or any electrical device running 1.5V with this circuit.

Simple transformerless RGB LED glow power supply   The presented project circuit diagram is a simple transformer-less power supply. Through this power supply you can glow 20 to 100 RGB LED lights.  This circuit is made using two polyester capacitors 474 J and 104 J.  We have used 4 diode 1N 4007 in this circuit to convert AC current to DC carrunt.   The list of electrical components use in this circuit have given below. List of electronics components  Capacitor  C1 474j 250v  C2 104j 400v  C3 47uf 160v Resistance  R1 1m ohm R2 22 ohm 1w Diode  1N4007 ×4