What's the reason for keeping a base line in optocoupler?
129016
Optocoupler with phototransistor base lead
129408
Why are home appliances and other devices made to operate on dc?
20689
How to control switch mode power supply feedback voltage through optocoupler?
56363
What do multiple emitters/collectors imply in a BJT schematics symbol?
140188
Why must identical lightbulbs in series have identical voltage drops?
82274
Why do networks need a common ground cable?
63457
Difference between live and neutral wires
124937
Why are light fixture wires allowed to be lighter gauge than house wiring on the same circuit?
151190
Line level voltage to drive LED display
30218
Why do PBX systems use -48 V?
17969
Why can't two series-connected diodes act as a BJT?
91031
Why is electric field lines away from (+) and toward (-)?
60265
Why do I only have 30V going to my light fixture
82547
What is the practical reason for associating cut-off frequency to %50 power attenuation?
35411
If blackbody radiation at 6000K peaks in the optical, why aren't fluorescent bulbs at 6000K?
102767
There's a difference between hot/neutral AC lines in a plug, but does it matter?
143282
Variation of the BASE Current with the COLLECTOR Current in CE config?