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  1. Choosing the Right Protection for Digital and ADC Inputs

    Oct 19, 2024 · Bottom schematic. The power of the overvoltage is clamped by a Diode and Zener. The 10 and 1k resistors limit the current. This is good for TTL but not good for analog if the …

  2. Alternator over-voltage and trip... back to Battery Voltage...

    Jan 21, 2007 · When I had an overvoltage issue that caused the OV protection to shut down the alternator, I bought another regulator to replace what I believed was the problem. While doing …

  3. crowbar ovp - Electronics Forum (Circuits, Projects and …

    Jan 19, 2021 · Also consider that TVS is a Transient Voltage Suppressor, something to remove spikes, not to deal with a hard high current source that has gone overvoltage. JimB …

  4. Simple over voltage protection circuit, using mosfet.

    Oct 21, 2022 · Hello guys. I'd like to know if I can use a mosfet (as shown on sample schematic). The idea is to turn off my circuit (connected to V-OUT) if more than 15V is applied. Please let …

  5. Accurate, Adjustable SCR Crowbar Circuit For Overvoltage …

    Feb 9, 2019 · Critical circuits may require protection from a damaging overvoltage due to power supply or other failure. For example, a typical failure in a buck switching regulator is a short in …

  6. Alternator Issues - Suspected Over Voltage | Pilots of America

    Mar 15, 2016 · I almost posted this in the thread about regretting a decision to upgrade planes. Anyhow, the left engine in the 310 got jealous of the attention the right one was getting from …

  7. High voltage startup circuits of flyback controllers (NCP1239

    Sep 5, 2024 · Hi, **..Question 1..** In AND8393 page 2 it shows a diode (D13) and two 1206 resistors (R41=R42= 1k82) being used in the HV startup circuit to NCP1219. The startup …

  8. Overvoltage protection 48V system | Electronics Forum (Circuits ...

    Sep 14, 2022 · DC voltage monitoring relay with 2 C/O contacts (2 Form C or DPDT) provide protection for the equipment from undervoltage and overvoltage in DC circuit 12V, 24V, 36V or …

  9. AC Overvoltage Protection for SMPS | Electronics Forum (Circuits ...

    Feb 23, 2023 · I recall I was asked a few years ago to design a circuit which can protect ‘linearly’ a ready-made SMPS (an AC-DC Switching Mode Power Supply rated up to 240V input) from …

  10. How resilient are X7R ceramic capacitors to short term …

    Apr 4, 2013 · As for the 30us overvoltage condition at 20V; that is 25% above the rated voltage for a very short time. Good manufacturers (read - AVX, Kemet, ATC, Panasonic) rate their caps …