How to Add Variable Voltage to Your ATX Based Bench Power Supply
Gather the materials required and construct the circuit from the circuit diagram., Get some banana leads and connect the +12V and -12V outputs from your modded ATX supply and connect it to the input of your variable module., Once you have built the...
Step-by-Step Guide
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Step 1: Gather the materials required and construct the circuit from the circuit diagram.
It would be a good idea to get the datasheet for the regulator from the manufacturers website. -
Step 2: Get some banana leads and connect the +12V and -12V outputs from your modded ATX supply and connect it to the input of your variable module.
Use a multimeter to measure the output voltage. , You should be able to vary the voltage from about
1.5V up to 22V by turning the variable resistor.
If you are using the LM317 the output current will be restricted to
1.5A, if using the LM338K it should be slightly higher check the datasheet for exact information. -
Step 3: Once you have built the circuit test it carefully and measure the output voltage.
Detailed Guide
It would be a good idea to get the datasheet for the regulator from the manufacturers website.
Use a multimeter to measure the output voltage. , You should be able to vary the voltage from about
1.5V up to 22V by turning the variable resistor.
If you are using the LM317 the output current will be restricted to
1.5A, if using the LM338K it should be slightly higher check the datasheet for exact information.
About the Author
Patricia Armstrong
Enthusiastic about teaching pet care techniques through clear, step-by-step guides.
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