Variable Regulator

power supply variable regulated 5V-13V using ca3140

This be power supply variable regulator circuit, since 5V to 13V that current about 1A. By use IC LM7805 (3-Terminal 1A Positive Voltage Regulator) perform maintain one’s position voltage, be stable that 5V. And have op-amp IC number CA3140 , help fine decorate voltage go out can modify 5V to 13V from get, by use VR1 in fining decorates. It takes current from output feed come back still a pin GND of LM7805 control the level voltage get efficiently better using resistor R1 only. See little detail in the circuit.

Be the first to comment - What do you think? Posted by admin - August 25, 2009 at 7:32 pm

Categories: Power supply, Variable Regulator Tags: lm7805 voltage regulator, variable regulated power supply

Mastech Variable Linear Lab Power Supply 30V 5A

Two levels of control for both current and voltage output: coarse and fine for ease of use Adjustable Output: 0-30V and 0-5A Input Voltage: 110V AC and 220V AC prevklyuchvaemi Line Regulation: CV <= 0.01% + 1 MV, CC <= 0,2% + 1 mA Load Regulation: CV <= 0,01% + 3mV, CC <= 0,2% + 3 ma ringing noise: CV <= 0.5 MV RMS, CC <= 3 mA RMS Protection of constant current and short circuit protection LCD reading accuracy: + / -1% for voltage and + / -2% Current Environment: 0-40 C, relative humidity <90% Size: 11.5 "x 6 5 "x 5.5" Weight: 13 lbs Warranty: 1 years
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Be the first to comment - What do you think? Posted by admin - December 8, 2008 at 5:28 am

Categories: Variable Regulator Tags: variable power supply

bench variable power supply 0-30V

Today I seeks variable power supply circuit come to deposit again. Which be the circuit that use base equipment, build not difficult follow the circuit can fine volt get 0-30V , give current get about 1-2A depend on transformer at you choose to use. The prominent point of the circuit use transistor join a pin BE replace Zener Diode. Then get around problems about seek buy Zener voltage that can’t want. By transistor at use 2N3638 numbers or the number replaces. For transistor output use 2N3055 durable numbers current not exceed 2A. For other detail , request friends , see in the circuit better.