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0V to 50 Volt Variable Regulator(CA3140)

2017-08-08 08:22  
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This article describes a 0V to 50 Volt Variable Regulator (CA3140). The principle is very simple, very practical. The circuit components can help you understand better grasp this principle. For example, in this circuit, you can go to find and buy these components: CA3140.

A very simple variable power supply circuit can be made using this electronic circuit diagram .This variable regulator circuit will provide an variable regulated output voltage , between 0 and 50 volts . The CA3140 operational amplifier compares the regulator output to a reference voltage , that depends on the R9 value.

Figure:1 0V to 50 Volt Variable Regulator Circuit

Figure 1 0V to 50 Volt Variable Regulator Circuit

The output voltage will be nominally twice the voltage between the positive input ( noninverting ) of the CA3140 and ground . The unregulated input voltage must be around 60 volts The output voltage can be set between 0 an 50 volts using R9 potentiometer .The 2N3055 transistors must be mounted on a heatsink , to prevent the overheating of transistors .



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