Hi,
I had a thread on the LM317 Regulator sometime back.. It was closed with only theoretical details..
when Now I started building it for higher voltage, I have big problems..
First of all I have a transformer which gives 32v 2.5A when rectified (Leave the current, I have it spare)
I need an output of maximum 18v 1A..
The available pots for my voltage range for R1 are 500Ω, 1kΩ and 4.7kΩ.. Heard 3.3kΩ is also there but was not in stock..
For R2 I tried with 100Ω 1/4watt and R2 1k but burned my resistor and voltage control was only between a few volts range..
Can somebody help me on R1 and R2 values with R1 only from among the listed above for 1.25-18v output..
Also I need 2 pots for R1 one being 500Ω in series with the other for fine control but not absolute necessary..
Will the circuit handle the input of 32vdc?? I have another tapping on the transformer giving 17vdc but that wont give space for LM317 regulator till 18v..
Could somebody help me out??
I had a thread on the LM317 Regulator sometime back.. It was closed with only theoretical details..
when Now I started building it for higher voltage, I have big problems..
First of all I have a transformer which gives 32v 2.5A when rectified (Leave the current, I have it spare)
I need an output of maximum 18v 1A..
The available pots for my voltage range for R1 are 500Ω, 1kΩ and 4.7kΩ.. Heard 3.3kΩ is also there but was not in stock..
For R2 I tried with 100Ω 1/4watt and R2 1k but burned my resistor and voltage control was only between a few volts range..
Can somebody help me on R1 and R2 values with R1 only from among the listed above for 1.25-18v output..
Also I need 2 pots for R1 one being 500Ω in series with the other for fine control but not absolute necessary..
Will the circuit handle the input of 32vdc?? I have another tapping on the transformer giving 17vdc but that wont give space for LM317 regulator till 18v..
Could somebody help me out??
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