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Sustained over-voltage protection for a 1 MHz digital logic line

I am working on a board which is user-insertable into a DIP socket. Incorrect insertion is always a concern, and in this specific case insertion “shifted-by-one-pin” is especially worrying. What then happens is that a 3V3 digital logic output line, which normally goes from an FPGA to a TTL input in the socket, instead gets […]

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Identification of SWD header for footprint

I figure StackExchange is the fastest way to get an answer. I need a header to put up a SWD connector, looking like this (and yes one of the solder pad is missing), a part number would be appreciated!

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Timed one-shot circuit to drive laser module

I’m trying to adapt my Match Guns MGH1 (Air pistol with electronic trigger) to use trigger a laser when shooting. Currently the trigger circuit is driving a solenoid. The circuit board seems to have the trigger signal passing through a monostable multivibrator (NXP HEF4538BT) that drives a LL024N MOSFET, which in turn drives the solenoid. […]

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Identification of SWD header for footprint

I figure StackExchange is the fastest way to get an answer. I need a header to put up a SWD connector, looking like this (and yes one of the solder pad is missing), a part number would be appreciated!

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Choosing the right PTC Resettable Fuse for a protection circuit

Power shield protection circuit specs Hello! Iv’e been creating an ESP32 power shield and started designing the protection circuit for the power supply with the following features: Reverse polarity protection. Overvoltage protection. Overcurrent protection. However, it is important to note that the design I’m using is based on this Input Supplied through either a 9V […]

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Will this 3-phase 208Y/120 setup work

OKAY…electrician I had out recommended the following setup to supply 3-phase wye 208/120v off of 240V single-phase. My device is pulling 30 amps, and my entire load is about 15KVA. It’s impossible to get an exact load number due to a number of VFD’s that are converting three-phase into single-phase to run motors inside my […]

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Dimension Engineering’s Sabertooth 2×32 Analog DIP Switch Settings

My goal is to control two DC motors using the Sabertooth 2×32 motor driver with the driver’s DIP switch settings set on analog mode. I read the driver’s manual, but there is a couple of things I don’t understand with the documentation on the analog mode DIP switch settings. There are two DIP switches which […]

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How to combine LTC2954 with TP4056 charging circuit

I’m new with electronics and I’m working in a personal project with ATmega328P-AU. The project basics are and ATmega328P-AU powered by a LiPo battery and the battery is charged and controlled by a TP4056 + DW01A + FS8205A. Actually I’m using a switch to power ON and OFF and I want to change that using […]

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Dimension Engineering’s Sabertooth 2×32 Analog DIP Switch Settings

My goal is to control two DC motors using the Sabertooth 2×32 motor driver with the driver’s DIP switch settings set on analog mode. I read the driver’s manual, but there is a couple of things I don’t understand with the documentation on the analog mode DIP switch settings. There are two DIP switches which […]

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Ask Engineering

Dimension Engineering’s Sabertooth 2×32 Analog DIP Switch Settings

My goal is to control two DC motors using the Sabertooth 2×32 motor driver with the driver’s DIP switch settings set on analog mode. I read the driver’s manual, but there is a couple of things I don’t understand with the documentation on the analog mode DIP switch settings. There are two DIP switches which […]