Questions tagged [mosfet]
Metal-Oxide-Semiconductor Field-Effect Transistor, a type of field-effect transistor (FET). MOSFETs have an insulated gate, the voltage of which determines the conductivity of the device. This can be used for amplifying or switching electronic signals. (From: Wikipedia)
7,240
questions
-2
votes
0
answers
70
views
How can I get these electronic components [closed]
How can I get these electronic components?
What is the difference between H10 ON and H30 ON?
All of them have 8201AG,NGD
0
votes
1
answer
51
views
Finding relationship between saturation current and Vgs for MOSFET?
I would like to use a MOSFET to control a continuous current (i.e. by changing gate voltage), the specific MOSFET I want to use is RFD16N06LE (datasheet: https://www.alldatasheet.com/datasheet-pdf/pdf/...
- 9
0
votes
2
answers
52
views
Strange Behavior with Soft Latching Power Circuit: LED Inconsistently Staying On
I'm here because I'm experiencing a very strange behavior with a Soft Latching power circuit found on YouTube.
Yesterday, after finishing my circuit and code, it was working weirdly: the LED would ...
- 101
0
votes
2
answers
30
views
Switching ON/OFF an ADC line
which electronic component could one use to switch ON/OFF several external lines for ADC?
Context:
I am working on a small project where I would like to measure 4 external voltages (0-3V range, let's ...
- 101
7
votes
2
answers
1k
views
Why is the MOSFET in this fan control circuit overheating?
I’ve designed a fan control circuit using an N-channel MOSFET (STN3NF06L.) The fan operates at 12V, and I’ve isolated the 12V side from the 3.3V microcontroller side using an optocoupler (ACPL-W314-...
- 73
0
votes
1
answer
71
views
Replacing the BJT in the current limiting circuit with a MOSFET
I was looking for a current limiting circuit and found an implementation using TL431 and a bipolar transistor.
However, I did not have a bipolar transistor at hand for the required current and ...
1
vote
0
answers
60
views
Why does this push-pull converter fail?
Consider the following circuit of a push-pull converter. I would be interested to learn why you think it fails (MOSFET and controller).
The controller is a UCC28084. The MOSFETs are SSM3K361R (i.e. ...
- 22.5k
0
votes
2
answers
80
views
How to know what size diode to use for inductive spiking?
I am making a simple Zener flyback circuit for an inductor.
What current rating should the diodes be sized for? Could I use a 1 watt Zener diode because the voltage spike only lasts a few microseconds,...
0
votes
1
answer
88
views
+50
The role of Q33 and the connection of pre-discharge circuit in the BMS circuit
I'm trying to understand the following circuit which is taken from the TI's TIDA-010216:
I don't understand the role of Q19, D29, D30 and Q33 in the circuit. According to this post, it seems that Q19,...
- 77
0
votes
2
answers
57
views
Designing battery voltage measurement with passive balancing
At work I have been busy designing a circuit for measuring the voltages of three batteries that are connected in series to each other. A microcontroller will read the voltages and determine which is ...
- 137
0
votes
3
answers
69
views
Transformer-coupled MOSFET gate drive circuits
I provided two pictures below regarding the transformer coupled gate driver circuit.
I know that capacitor blocks the dc when its fully charged and allows AC to pass.
However, how does the capacitor ...
- 377
0
votes
1
answer
37
views
Chip Identification - SAW part marking
would anyone know what chip this is? I thought it could be BSS123, but I am not so sure anymore, because the drain would then be connected to a feedback pin of a flyback DC-DC converter and the gate ...
- 129
0
votes
2
answers
95
views
Best method to dampen inductive spiking from pulsing coil with MOSFET?
A simple diode works across the coil to lower the voltage spikes, but I ideally need a way to absorb the inductive spiking as fast as possible. I've heard a Zener diode across the drain and source of ...
1
vote
0
answers
54
views
Working of differential pair using MOSFETs
I am currently learning about differential pair using MOSFET from this course. In this particular lecture, the teacher says that to have a differential pair we need to apply the second signal v2 at ...
- 180
1
vote
1
answer
95
views
Unable to use a MOSFET to connect two capacitors in series
I am trying to design a circuit such that I can connect two capacitors in series by applying a gate voltage to a N-type (specifically IRF530N) MOSFET. I am getting results I do not understand. When I ...
- 13