Variable Power Supply 10A Symmetrical
The circuit of variable power supply 10A symmetrical can provide a symmetrical output voltage of ± 1.2 volts to ± 30 volts DC with a maximum current of 10A. The circuit of variable power supply 10A symmetrical uses variable voltage regulators LM317 and LM337 then using current amplifier transistor NPN and PNP transistors TIP147 TIP142 capable drain currents up to 10 amperes. Detailed diagrams and parts list can be seen in the schematic circuit variable power supply 10A symmetrical below.
The circuit of Variable Power Supply 10A Symmetrical
The circuit of variable power supply 10A symmetrical above using 32 volt transformer CT 10A and a diode bridge as a full-wave rectifier, its symmetrical then use the filter capacitor ripple 10000 uF / 40V.
Regulators In the Variable Power supply 10A Symmetrical
As a positive voltage regulator using LM317 IC which can control a steady voltage of 1.2 volts DC to 30 volts DC. Positive output voltage regulator using 2.2 Kohm potentiometer and a current amplifier using the positive path that is assembled TIP147 PNP transistor common base.
Part negative power supply voltage using a variable voltage regulator IC LM337 controlled using a 2.2 Kohm potentiometer to provide a negative output voltage of -1.2 volts DC to -30 volts DC. Negative path current amplifier using an NPN transistor TIP142 strong common base.
The circuit of variable power supply 10A symmetrical is suitable for use in a space experiment as giving a voltage source which can be adjusted as needed to complete polarity selection and able to supply a DC current up to 10A. The Power supply circuit is equipped with short-circuit protection (short circuit), and excess heat (over heat) on a circuit of variable power supply 10A symmetrical.