Questions tagged [tvs]
Transient Voltage Suppressors (TVS) are a type of semiconductor designed to protect against overvoltage situations.
369
questions
0
votes
1
answer
30
views
Part number of this IC marking "R2. 8"
Can anyone please help me define the part number of this part marking "R2. 8" in the picture below?
- 71
-1
votes
1
answer
71
views
Voltage and current on two identical TVS diodes in parallel during a voltage spike
Suppose I have two identical unidirectional TVS diodes (A and B) connected in parallel to a voltage source and suddenly a voltage spike occurs (spike voltage > voltage clamp of the TVS diode specs ...
- 450
0
votes
0
answers
43
views
Relay controlling DC motor welding shut
I am controlling a fairly large DC motor using a relay. The motor draws approximately 7A at 36V. I am controlling it with a relay rated at 110VDC, 50A. To protect against back-EMF, I placed a ...
- 65
1
vote
1
answer
64
views
Identifying SMD diode - markings ST e3 G (next line) DUK (next line) G3 635 (or b35)
I am trying to identify the following diode. I can see it says DUK G3 but am unsure on the last part, if it’s meant to be 63S or b35 or something like that. I’ve tried multiple Google searches and can’...
- 13
0
votes
1
answer
26
views
Does the unidirection TVS diode like SMAJ15A be used on DC lines to protect the IC or Converters from negative Peak, clamp down to -0.6V?
Most of the DC- DC converters have absolute maximum down to -0.6. If bidirectional TVS diode is used then negative peak cannot be clamped near to -0.6v, in this is the case can we use the ...
0
votes
2
answers
69
views
Ensuring Proper Damping and Protection at Power Connector Inlet
I am designing a power input stage for a system (which consumes up to 90W) and want to ensure it is properly damped and protected. Here are the components and considerations I have incorporated so far:...
- 1,067
3
votes
2
answers
294
views
Correct Implementation of Flyback Diode, TVS Diode, and Snubber Circuit for Buck Converter?
I am fairly new to circuit design. I was wondering if I have correctly implemented the TVS diode (D8), flyback diode (D6) and the snubber circuit (R20 and C41) for this buck converter. I apologize in ...
- 55
0
votes
0
answers
48
views
Questions regarding TVS-diodes and grounding
I am currently working with solutions to pass the ESD-requirements for EMC. I have used TVS (ESD)-diodes in the past to good result, but never really understood exactly why they work. Sadly, this is ...
- 11
2
votes
1
answer
75
views
What does back-back mean in the context of TVS diodes?
I am making the schematic of a 24 V power supply regulator using the LM74900-Q1 IC. When selecting the TVS diodes, I found the following design suggestion in the datasheet of another IC (LM74800-Q1) ...
- 23
0
votes
0
answers
50
views
Easy Overvoltage and Reverse polarity protection circuit
I'm looking for the simplest and most effective way to add an overvoltage and reverse polarity protection network to a signal line connected to an MCU, the maximum allowable voltage at the MCU pin is ...
- 15
0
votes
1
answer
65
views
What circuit protection devices are needed for an automotive application? [closed]
I am designing a circuit for a automotive application which is meant to map voltage ranges between two sensors (ex. 1 sensor has an output range of 0-5V while the other has a output range of 1.75-7.0V)...
-1
votes
1
answer
23
views
Suitable TVS diodes [closed]
I have a circuit on an old bit of equipment that keeps ending up in our telecoms workshop,my colleague thinks this is from surges, the system has a 12v 5A supply, the circuit has 5v and 3.3v rails, as ...
- 1
1
vote
1
answer
74
views
Overshoot at powerline
I had a problem with a bunch of series connected electronics devices containing microcontrollers. At seemingly random times the microcontrollers in the PCBs broke. The rest of the circuit stayed ...
- 33
1
vote
2
answers
63
views
Identify TVS: SMC package, GEM 88A
I have this TVS installed on some CCAs. It is not marked like the correct part. The correct part is marked GEM 15A as opposed to this part which is marked GEM 88A.
- 11
5
votes
1
answer
360
views
Bidirectional TVS between field ground and analog ground
I'd like to know why this circuit has a TVS diode between both grounds.
The field ground is the physical ground used in the circuit and the analog ground is used for 6 analog signals (between 4 and ...
- 141