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An electronic device that supplies electrical energy to a load. It can be AC or DC input. Typically DC output.

68 votes
8 answers
46k views

Why do we need an isolation transformer to connect an oscilloscope?

My professor always insists that I provide power to an oscilloscope thorough an isolation transformer. What is the necessity of this? What is the risk if I don't connect it?
noufal's user avatar
  • 1,635
7 votes
1 answer
2k views

What is the purpose of parallel RC network in the bridge rectifier output?

Can anybody explain the necessity of the RC network shown in the figure. I found this in circuit for a logic power supply using Fly-Back converter?
noufal's user avatar
  • 1,635
3 votes
5 answers
5k views

MOSFET is not turning off when the gate terminal is grounded

This figure shows a small portion of my circuit: The maximum Vgs of the MOSFET is 20V. The MOSFET is initially turned on and now I want to turn it off. For that I am grounding the terminal A to gro …
noufal's user avatar
  • 1,635
2 votes
4 answers
4k views

What actually is the output current of a boost conveter?

What I understood at least at a basic level the operation boost converter, the inductor supplies output current when the switch is OFF. When the switch is ON the the load current is taken current b …
noufal's user avatar
  • 1,635
9 votes
5 answers
10k views

What is the purpose of an RC branch accros the diode of a rectifer circuit?

Recently I was going through the data sheet of the TOP264 TOP Switch IC. In a typical application circuit diagram, at the secondary of the transformer they have used a configuration for the diode as f …
noufal's user avatar
  • 1,635