I am building a bench power supply (may first project in about 25 years ).
The supply will be variable from 1.2V to 30V (or so). I am using an LM317 because it is so easy to use. It can provide 1 amp.
My bridge rectifier is putting out around 32 VDC.
The max input on the LM317 is 40V. Is this enough of a buffer? What about any surges?
If I wanted to clamp the input to the LM317 at 32 V. How would I do it? Would I use a zener? If so, how do I calculate the wattage?
The supply will be variable from 1.2V to 30V (or so). I am using an LM317 because it is so easy to use. It can provide 1 amp.
My bridge rectifier is putting out around 32 VDC.
The max input on the LM317 is 40V. Is this enough of a buffer? What about any surges?
If I wanted to clamp the input to the LM317 at 32 V. How would I do it? Would I use a zener? If so, how do I calculate the wattage?