15V Variable Volt Regulator | Electronic Project Circuits

Posts Tagged ‘15V variable volt regulator’

Easy power supply 0-15V , 0-1A

This is easy circuit power supply, variable regulator adjustable voltage output 0V to 15V and Current adjust 0A to 1Amax. Use normal electronics part.

TR1 provides a constant current to a bank of three zener diodes, thus maintaining a constant voltage independant of supply voltage variations. The resistor Rx is used to sense the PSU output current and to switches off the current to the zener diodes should the output current become excessive. The 1M0 (logarithmic taper) pot causes the current sensor (TR2) to “kick-in early”, so providing a variable current threshold limit. The value of RX should be (0.7/Amperes) ohms, where Amperes is the maximum output of the bench PSU. The prototype was set to 1-ampere, so Rx should be 0.5 / 1.000 = 0.5 ohms. The resistor should be rated at 1-watt, or 2x 1R0 500mW resistors in parallel for 1-ampere maximum output. I have used 4x 1R0 ohms in parallel (0.25 ohms) and have achieved 2-amperes (with a bigger heatsink).
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Read More Source:http://web.telia.com/~u85920178/use/psu3.htm
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Categories: Power supply, Variable Regulator Tags: 15V variable volt regulator, mini project, Variable Regulator

Simple power supply variable Voltage 0-15V, max output 1A.

Simple power supply variable Voltage 0-15V, max output 1A.
This circuit is simple, direct current power supply.It can adjust the voltage to 0-15Volt with rotating VR.And current is 1A.Using a transistor number 2N3055,It is used to boost up electrical current the output. For C1, C2, C3 for electric filtering the smooth up. This integrated circuit used for constant current.Q1 – 2N3055 should be taken with a heat sink.

Source : http://www.bonavolta.ch/hobby/en/audio/reg_sup.htm
Thank you.