Screech
New Member
Looked for hours on the net, with no success.
Even the 7905 data sheet is useless to me.
I nead to make a +-5volt supply. (5volts positive and 5 volts negative).
I know how to use a positive volts regulator.
You feed it's input with a voltage of about 3 volts higher.
But what about the -5 volt regulator.?
Does the input of the -5 volt regulator have to be -8volts, or -2volts or 5volts or 8volts, or can it be all?
Ideally, I would like to power these two regulators from a single 9volt source/battery.
Thanks
Even the 7905 data sheet is useless to me.
I nead to make a +-5volt supply. (5volts positive and 5 volts negative).
I know how to use a positive volts regulator.
You feed it's input with a voltage of about 3 volts higher.
But what about the -5 volt regulator.?
Does the input of the -5 volt regulator have to be -8volts, or -2volts or 5volts or 8volts, or can it be all?
Ideally, I would like to power these two regulators from a single 9volt source/battery.
Thanks