I’ve considered how to turn a power on indicator LED into an output voltage indicator for an adjustable power supply. All the user would see is the indicator LED. This LED would be full brightness when the PS is on, except when it is indicating the voltage, which is when the LED will dim. The
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“”Every school should have a “fix-it lab” where students learn to repair their clothes, bikes and electronics. We should grow up knowing that not everything is disposable, that care and repair are part of living well on this planet.”” https://www.facebook.com/reel/1280502713546957/?mibextid=9drbnH&s=yWDuG2&fs=e
The average hobbyist should not rely on this tester because of the deficiencies listed below. Instead he or she should buy a transistor tester that can analyze the device and tell what the pin out is and polarity, N-channel or P-channel. Also it can tell if the device is a MOSFET or a regular power
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This guy has the same problem as I have: the screen is scrambled in some places – top and bottom.
Here’s a 17 min. video describing the above in the title. It’s technical and somewhat complicated but calculates the power dissopated during switching. There are a lot of important details, such as the value of the gate resistor. I think I need to do a lot more studying about this topic.
This is how the Egyptians used copper tools to cut the stone blocks. https://www.facebook.com/reel/615624941183863/?mibextid=9drbnH&s=yWDuG2&fs=e
This short uses a CD4026, a 7 segment display, 9V battery, some resistors, an IR LED and a CdS photocell or phototransistor. Break the IR beam and the display advances to the next digit. https://www.facebook.com/reel/525596709839365?mibextid=9drbnH
A long time ago when we were going to Cat5 UTP, I had a lot of these MX20Ts left over. So I made up a 15 pin plug with the negative 9VDC on pin 6 and positive on pin 13, and soldered the wires to the battery contacts. I taped the battery to the back
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This very comprehensive electronics website has many projects with useful devices. This example project is a transistor curve tracer. Go to the index and look at the many, many links. It seems to be at the ETH in Switzerland but some of the words are in ?Thai? https://www.changpuak.ch/electronics/Curve_Tracer_advanced.php#
This very comprehensive website has a transistor and FET Curve tracer. Also a simpler curve tracer for all components. Click on box to download the schematic, etc. https://www.changpuak.ch/electronics/Curve_Tracer_advanced.php#
