Q
quietguy
- Jan 1, 1970
- 0
Hi All
I am building a dual supply for general hobby work - 5v fixed and 0 to
15v variable. Suit microchips, TTL stuff, and small motors etc etc
Basically 2 separate supplies in the one box, with the monitoring meter
switchable between V and I, and between supply A and Supply B
No sweat with that.
What I am not sure about is whether to have the supplies fully floating
or earthed or floating with a removable link to earth or a removable
link for the negs.
ie both neg output terminals earthed? Both just joined - ie common negs
-
The variable supply will be based on a switch mode power pack I happen
to have - output fed to an adj voltage regulator - hassles?
The other on a xformer power pack feeding a 7805 etc
Housing is a plastic box - can fit with a 3 pin lead/plug if I need the
earth
Will appreciate views, ideas, and advice
David
I am building a dual supply for general hobby work - 5v fixed and 0 to
15v variable. Suit microchips, TTL stuff, and small motors etc etc
Basically 2 separate supplies in the one box, with the monitoring meter
switchable between V and I, and between supply A and Supply B
No sweat with that.
What I am not sure about is whether to have the supplies fully floating
or earthed or floating with a removable link to earth or a removable
link for the negs.
ie both neg output terminals earthed? Both just joined - ie common negs
-
The variable supply will be based on a switch mode power pack I happen
to have - output fed to an adj voltage regulator - hassles?
The other on a xformer power pack feeding a 7805 etc
Housing is a plastic box - can fit with a 3 pin lead/plug if I need the
earth
Will appreciate views, ideas, and advice
David