Multiple Supply | Electronic Project Circuits

Posts Tagged ‘Multiple Supply’

DC power supply 5V and 12V using 2N3055-LM309

This be DC power supply regulator circuit be simple. That can give voltage come out 12V and 5V by use part base be Transistor 2N3055 and Zener Diode 12V. Make can take volt can reach about 15V maintain one’s position voltage be stable 12V well. And change the integrated circuit LM309 for regulate about 5V for apply to Digital Circuit general get. For C3-0.1uF filter the frequency disturbs all well. For other detail friends see in the circuit please sir.

Be the first to comment - What do you think? Posted by admin - November 19, 2008 at 8:18 am

Categories: Power supply Tags: 12v power supply, 2N3055 power supply, 5 volt regulator, Multiple Supply

5V-12V Multiple Supply Switching regulator by L4970 and L4974A

Today take Multiple Supply Switching regulator Circuit. Come to deposit friends keep see in rows think out it can give Voltage supply about 5V 10A and 12V 3.5A. In same circuit by the character of Switching Regulator at use integrated readymade circuit. Work the character Synchronization between IC L4970 and L4974A. When friends see circuit think use a little many equipments. A friend feeds power supply input 35V 10A min just one group can give voltage output follow want. By the L1 use 80 uH sizes and , L2 = 300uH. The detail is other , request friends , see in the circuit please yes.

Be the first to comment - What do you think? Posted by admin - September 27, 2008 at 8:16 am

Categories: High current power supply, Power supply, Switching power supply Tags: 12vdc power supply, L4970, Multiple Supply, switching regulator

Dual Voltage Regulated 5V 2A ,12V 2A by 7805×2 – 7812

A friend of mine who runs an electronic shop wants to install an old cd-rom to be used as a stand alone cd-player in his truck. His problem was to find a suitable power supply for this purpose. A cd-rom uses 2 power supplies, 5 Volts which is used in its logic circuit and 12 Volts for its servos. With these parameters I needed to make a dual regulator that produces 5 Volts and 12 Volts output in one input voltage. Trucks usually uses 2 lead-acid batteries so that will be around 24 Volts.

The cd-rom uses around 1.5 Amperes of current for the 5 Volts and 2 Amperes for the 12 Volts. Considering all the needed parameters, using two 7805 regulators for the 5 Volt supply will suffice however we need higher current for the 12 Volts. Using an “old-school” technique, we will be utilizing one 7812 regulator but putting an additional transistor to beef up its current capacity up to 5 Amps. I know its an overkill but better safe than sorry.