All Questions
8
questions
0
votes
1
answer
434
views
PNP Darlington pair as a current limiter
I am trying to analyse what is controlling the load current in the below Darlington configuration.
Is it the base current of transistor Q3 which is controlling current through R14 / emitter current ...
- 328
1
vote
1
answer
803
views
How to limit current while almost keeping voltage same
I am supposed to design a power supply to a project. I have 3 alternative power supply designs for this purpose. However, one of them sucks huge current while giving enough current. My design is given ...
0
votes
1
answer
100
views
Why does the high Side Current Shunt monitor fault as soon as power is on
The high side current shunt monitor fault goes high as soon as power is turned on preventing the P-MOSFET from turning on, its not faulting because of over current but as soon as the Enable signal ...
- 45
-2
votes
1
answer
1k
views
Transistor - Control current flow
simulate this circuit – Schematic created using CircuitLab
I am having trouble finding how to limit the current flow from the collector to the emitter of a transistor. (Is it possible? I know ...
- 3
5
votes
1
answer
7k
views
BJT Current limiter for linear power supply
I am trying to design a current limiter or my LM317 based power supply using this schema.
The power supply must be able to provide a maximum of 1.5A@30V.
I made some calculations and I would like to ...
- 561
7
votes
2
answers
6k
views
How does this power supply circuit work?
This is the circuit of a power supply with adjustable output voltage and current, and I wish to understand how it works:
What I did understand:
R1 T1 VD5 - they form a voltage divider which provides ...
- 173
5
votes
1
answer
14k
views
Current limiters using transistors and diodes
I have been experimenting with simulating current limiting circuits. I am trying to limit current to ~500mA given a fixed 4.8V source. I started a question based on a conventional 2-transistor current ...
- 1,341
8
votes
3
answers
13k
views
Help needed optimising simple current limiting circuit
I have been experimenting with simulating current limiting circuits. I am trying to limit current to ~500mA given a fixed 4.8V source. I have started using a circuit like the one found on this ...
- 1,341