All Questions
22
questions
0
votes
1
answer
87
views
Driving a power MOSFET successfully
I have recently purchased this power MOSFET for a project (dump load resistor):
https://uk.rs-online.com/web/p/mosfets/6867852?gb=s
Alongside this I have bought a MOSFET driver see link:
https://uk.rs-...
- 49
3
votes
1
answer
79
views
Voltage drop issues in LTspice simulation for buck converter using SW model
I have a LTspice design issue where I encounter the same problem, even when I use other available simulations.
Whenever I increase the load, there is a significant drop in voltage, despite having ...
- 524
0
votes
1
answer
22
views
Relay circuit for DC LED strips switch
Is this schematic OK for 24 V UVC light control via 5 VDC relay?
5
votes
2
answers
430
views
Load Selector/Load Switch
Following the provided schematic, my goal is to design a circuit that can determine the direction of a Pulse signal based on a control signal (CTL). To achieve this, I am utilizing two pmos ...
- 316
1
vote
0
answers
44
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Pond auto top-up project switch failure issues
I am installing a system to top up my pond when the water level drops below a certain level using a solenoid valve. I decided on 3 float switches - low level switch starts the filling, upper level ...
- 11
0
votes
1
answer
2k
views
How to wire a 6-pin relay?
I have the relay described in this datasheet. I have the z-type. It has 6 pins on the bottom.
I want to control this relay with an Arduino device and all it has to do is work like a switch.
simulate ...
- 4,145
0
votes
0
answers
102
views
Loading problem with circuit simulation
EDIT #1
So I understand now the phenomenon that is happening.
Taking operational stage 2 Switch is OFF.
So there are the 2 cases discussed.
RL = ∞ (exaggerated scenario) the current I1 >> I2 ...
- 536
1
vote
3
answers
2k
views
P-Channel MOSFET used as a load switch, practical doubt about Vgs
UPDATE AT THE BOTTOM
in a battery powered project with high current I'm using a P MOSFET as load switch in place of a mechanical switch to prevent inrush current and consequent spark on the switch ...
- 11
0
votes
1
answer
24
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Load switch wiring help (UM3865-A)
I'm making my first PCB and I was wondering if the wiring to this load switch is correct. I'm unsure, since I am not using slew-rate control, if R2 and C1 are omitted should those connections be ...
- 1
0
votes
2
answers
206
views
Port expander with high side switch ground dilemma
I have a design wherein the basic idea is to control individual LED strings and dim (analog dimming) them using Pi Pico via I2C interface.
This board is the LED driver which will be connected to the ...
- 19
3
votes
3
answers
152
views
Delayed switch (closed for three seconds then open)
I have server that won't power up.
I found that if I connect a 50Ω load to the +12 VDC output of the power supply everything works fine.
I only need this additional loading for about three seconds.
I ...
- 31
0
votes
0
answers
92
views
DC on-load switch (with overload and short circuit protection)
I have an application where I shall switch a DC load ON and OFF (with DC input), but have also to provide overload and short circuit protection. Switching voltage is 400VDC and the load is 2KW.
I need ...
2
votes
2
answers
369
views
Why are standalone MOSFETs and transistors preferred over integrated load switches?
As a novice to EE concepts who's trying to apply it to Arduino projects, I was doing hours of research on how to electronically switch another higher current (or voltage) device/component/subsystem on ...
- 137
0
votes
1
answer
234
views
Best way to turn off P-FET with 3.3V available (P-FET Load Switch Application)?
honestly I'm drawing a blank. I am trying to turn on and off a load with a P-CH MOSFET. I used generic resistor values just to be clear.
Now, in this example the VGS will clearly never go to 0. It ...
- 143
0
votes
2
answers
325
views
Adapter load switch MOSFET schematic questions
I have a few questions concerning a input adapter load switch schematic for a battery charger IC (bq25780S). I posted a screeshot of this part of the schematic from the reference design (BQ24780S ...
- 261