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Estimate transient power of crowbar circuit

I am designing a crowbar circuit and for this circuit it is important that the maximal transient energy that goes through the circuit before the fuse trips stays below a certain limit. The setup of ...
luukito's user avatar
  • 41
2 votes
1 answer
192 views

Transient and Surge Protection

It seems that when choosing ESD/TVS diodes, MOVS and GDTs that while their clamping voltage is rated in Volts, their protection is rated in Watts or Joules. For example, the LittleFuse SMCJ250CA is ...
MMmmm's user avatar
  • 49
1 vote
2 answers
924 views

Reverse voltage spike protection on high-side of a (coiled) relay without flyback diode

I have a microcontroller interfacing with a normally-open automotive relay on the high-side, through a P-MOSFET. When the microcontroller closes the P-MOSFET's Source & Drain (by sending LOW ...
biasedbit's user avatar
  • 113
0 votes
2 answers
290 views

How to protect a GPIO pin with a long input wire from transients?

I am building a custom doorbell system that will support multiple doorbell buttons and annunciators. I am using an Adafruit Feather and a couple of FeatherWings for each unit. The project can be ...
David Patterson's user avatar
2 votes
0 answers
408 views

Automotive reverse current and transient protection

Adding reverse polarity and reverse current protection to an automotive circuit seems a bit challenging, especially when driving loads in the 10 A range (e.g. seat heater). Diodes on the power line ...
sg1's user avatar
  • 21
1 vote
1 answer
504 views

Deep explanation on TVS diode voltage suppression?

I am looking for a deep explanation on why a TVS diode suppresses voltage. All of the research I have done on Google just says 'it suppresses voltage by shunting current', but this doesn't make sense ...
Tom's user avatar
  • 59
0 votes
0 answers
72 views

Arcing contacts corrupt communication. What to do?

I have a robot with external charging contacts and a docking station with exposed pads this robot has to drive into to start charging. When trying to dock and charge I seem to get a lot GND bounce, ...
Alex Er's user avatar
  • 111
1 vote
2 answers
248 views

voltage transient protection for MV Motors

What types of transient voltage protection is applied on medium voltage motors and are these types of protection that are applied depended on the type of motor it is e.g Synchronous vs Induction motor?...
zarbtc's user avatar
  • 11
5 votes
1 answer
946 views

How does this isolation transformer protect user from transients/mains?

I'm looking at a pretty simple overvoltage/transient protection circuit designed to protect users but I don't understand what the transformer is doing. The circuit is designed to protect the output ...
Fat Diode's user avatar
  • 279
0 votes
1 answer
897 views

Transient voltage protection on an automotive circuit

I am currently working on a DIY quickshifter. This stops the spark for a very short time when changing up gears so that gears can be changed at full throttle. I have a working circuit, but it ...
Rickerman's user avatar
0 votes
1 answer
272 views

Does a shunt regulator protect other ICs from high current transient spikes?

Does a shunt regulator like 431L (datasheet), wired like this (VKA is not connected to anything) help protect other electronics supplied from INPUT net (battery connection)? INPUT net also supplies ...
LuisOn's user avatar
  • 153
5 votes
2 answers
912 views

Transient Protection

What does Transient Protection mean? I'm looking at a datasheet that explains transformerless PSU's, and there is an example schematic that shows a varistor or MOV that provides transient protection (...
BG100's user avatar
  • 5,838