Equipment operating on negative voltage instead of positive voltage
30218
Why do PBX systems use -48 V?
23850
Phantom Voltage on Hot Wire from Another Circuit
114801
Amplify current and voltage to preserve battery
88894
Why does a 12V 2A adapter measure only 0.358A on a multimeter?
14016
Least expensive way to boost DC voltage
70877
What does it mean when there is a voltage difference between ground and neutral?
121865
BJT in Reverse Active Mode of Operation
48848
Relay: higher voltage allowed at lower current?
125877
I need to switch between two 240V 30A loads
59547
Short circuit = zero voltage?
107150
How to prevent DC motor from dropping voltage of supply when switching on
28182
Two power supplies in one machine
9788
Help me understand the relationship between positive, negative, neutral and ground in AC and DC
147129
If induced voltage (back-emf) is equal and opposite to applied voltage, what drives the current?
49846
Which wire is negative on this PC fan?
98480
Using 240v mains on/off as input to microcontroller
127076
Energia/MSP-EXP432 Issue: Analog In Pin removing voltage from Voltage Divider