Questions tagged [undervoltage]
The undervoltage tag has no usage guidance.
96
questions
1
vote
0
answers
80
views
Using TL431/ATL431 to make UV lockout circuit for gate driver IC
I am using UCC5350 (isolated gate driver) in 3 phase bridge circuit, sadly I decided later in the project to use isolated Bipolar dc/dc converter MGJ2D241509SC (+15/-9) for gate drive supply. 15 V ...
- 489
1
vote
1
answer
70
views
Voltage stabilizer or voltage protection device for irrigation setup [closed]
I have an irrigation setup in a rural area with voltage fluctuations.
The irrigation setup consists of a Hunter X2 Controller powering a pump start relay which in turn runs a 1.5 HP submersible motor ...
- 13
0
votes
0
answers
34
views
Is it possible to design an over/under AC voltage protection circuit using only diodes and SCRs?
Is it possible to design a circuit using only SCRs and diodes (Zener or otherwise) as a main regulating device to protect a load (220 V, 80 W) from over- and undervoltage? Other passive components (...
- 43
0
votes
1
answer
74
views
Undervolting magnetically held switches
I have acquired a Honeywell ET series switch (best datasheet I could find) whose holding coil is rated to run on 28 VDC. I know it is often deployed in aeronautical environments where voltage can drop ...
- 59
0
votes
0
answers
105
views
Will Undervoltage Damage A Brushless Fan?
I have an off-grid solar panel set up ready and it works really well. My solar PWM charge controller of the back side aluminum heat sink is too hot to touch when its during sunlight.
I was thinking ...
- 690
1
vote
0
answers
288
views
Modifying XL4015 CC/CV Buck Converter for Undervoltage Lockout
I am trying to convert a XL4015-based CC/CV buck converter module to CV with undervoltage lockout. At this point I am hoping someone can double check my schematic for glaring errors before I attempt ...
- 11
1
vote
2
answers
557
views
Can Li-ion BMSs be used with Li-po batteries?
I'm building a robot that's running on a 12S, 10400 mAh Li-po. Because of obvious reasons, the system requires a protection circuit.
Can I purchase this 13S (which I suppose works with lower S values ...
- 411
0
votes
0
answers
45
views
Slow rise time in power supply
Does power supply slow rise time affect the UVLO start threshold voltage to turn on the IC (tps54316mpwprep)?
0
votes
4
answers
143
views
Trying to fix leakage issue in this under-voltage cut-off circuit
I have a device that works with EV battery 48 V (40-65 V) input and now I need to cut off my circuit load below 40 V battery voltage to prevent further battery discharge.
I'm trying to simulate an ...
- 131
0
votes
0
answers
36
views
Measuring the battery voltage while the circuit is under load for under-voltage protection
I have built a flashlight composed roughly of a raspberry pico which delivers a PWM signal to a powerful array of 4 parallel multiple-LEDs chips powered via a half-bridge driver and two N-channel ...
- 154
1
vote
0
answers
24
views
Connecting a second power source to a drain of an OFF P-Mosfet
As a follow-up question to my previous question regarding a circuit that passes voltages above 17 V, I wanted to be sure how to connect output of the solution circuit to my application.
The output is +...
- 1,067
3
votes
2
answers
326
views
Can the UVLO threshold be below the minimum supply voltage?
I need to reduce the power dissipation of a MOS used in a battery charger MCP73842.
To achieve this, I can reduce the supply voltage. From the datasheet, I see that the minimum power supply voltage is ...
user220456
2
votes
1
answer
227
views
Pump undervoltage protection
I'm planning on building a solar powered pond filter for my koi pond and my setup goes like solar panel to charge controller to inverter module to pump. I have tested the setup and it works when the ...
- 690
0
votes
0
answers
100
views
Low voltage cut-off with delay
I want to put an accessory on my motorcycle that consumes 40mA even it isn't in use, but I don't want to drain the battery.
I want to put a low voltage cut-off circuit with relay set to 11.6V to ...
- 1
1
vote
1
answer
141
views
Under-voltage lockout and a 555 (astable 50% duty cycle) lets LED flash – now save more power
The following project is built:
A 9 V battery is used – no socket required. This is important to gain experience for future projects.
There is an under-voltage lockout, which switches off when the ...
- 333