Free Electronic Circuit Schematics » Switching power supply http://www.free-circuit.com Circuit diagram for Power supply,Battery Charger,Power amplifier,Inverter,Converter Wed, 14 Dec 2011 00:09:59 +0000 http://wordpress.org/?v=2.8 en hourly 1 2-36V adjustable regulator power supply circuit with LM1458 http://www.free-circuit.com/2-36v-adjustable-regulator-power-supply-circuit-with-lm1458/ http://www.free-circuit.com/2-36v-adjustable-regulator-power-supply-circuit-with-lm1458/#comments Mon, 01 Feb 2010 14:47:39 +0000 admin http://www.free-circuit.com/?p=460
18-36 power control
18-36 power control

This power supply circuit is adjustable 18-36 volts and is currently shown as being limited to 2 amps, but up to 3 amps in a small current sense resistor of Options (0.3 ohm). 2N3055 and 2N3053 transistors should be in wells. very hot right now and resistance is to be made at 3 watts or more. Voltage, which is controlled by 1 / 2 of the LM1458 Op Amp, or 1458-AMP. It can be replaced in the circuit below, but sources indicate pressure. Pin 8 to 30 VDC supply is limited, which may increase by 6.2 Vdc or 5.1 Vdc. Zener K-series resistance, is 8-pin. Maximum supply voltage DC for LM1458 and LM1558 are 36 and 44, respectively.

    Should be the power transformer. As expected the power supply. Enter at least 4 times the desired output voltage, but can not exceed the op-amp under conditions of low stress. Transformer is used as a center, see 25.2 volts AC / AMP 2 units to regulate the 24 volts at 0.7 amps, 15 volts at 2 amps or 6 volts at 3 amps. Output AMP 3 is the center of the water. Transformer that changes the position of 18 volts. All components must be an exception from Radio Shack LM1458 op-amp.

]]> http://www.free-circuit.com/2-36v-adjustable-regulator-power-supply-circuit-with-lm1458/feed/ 0 14 Volts 2Watt Switching Power Supply Circuit With 2N3053 http://www.free-circuit.com/14-volts-2watt-switching-power-supply-circuit-with-2n3053/ http://www.free-circuit.com/14-volts-2watt-switching-power-supply-circuit-with-2n3053/#comments Wed, 01 Jul 2009 15:54:32 +0000 admin http://www.free-circuit.com/?p=175
Switching Power Supply 14 Volts 2W Circuit
Switching Power Supply 14 Volts 2W Circuit
For this electronic project in small switching power supply Schmitt trigger oscillator is used a transistor of switching system which is currently a small inductor.
 The energy in the inductor while the transistor is switched on and in the charge circuit when the transistor off.
The output voltage is dependent on the load and is provided with a Zener summarizes oscillator when the voltage to about 14 volts.
More or less high voltage can be minimized by adjusting the voltage divider provides the Zener.
The efficacy is about 80% with a high Q inductor.

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