It is not a good idea to “peak” the IFs for maximum volume of a radio station. The radio should be aligned with a sweep generator connected to the oscilloscope. What you actually want is to tune the radio so the bandwidth looks flat topped with steep skirts. This gives your audio high quality. If
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“”I saw this signal injector kit so I built my modified version of it on a PCB. Notice that they used two PNP transistors and a positive ground, presumably to get pulses that were positive going. I used an astable multivibrator with negative ground like normal and I changed the output transistor to a PNP,
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Asianometry tells about the Regency TR-1 using a matched pair of 2N185 Texas Instruments germanium transistors. After 2:20 time
It depends on your budget. Some others recommend used high end equipment. I have some older HP equipment. But I bought a new FNIRSI 100 mHz DSO – digital sampling oscilloscope. It’s much more portable than older scopes, it runs off a 5V charger and does so many more things than older scopes. You can
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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
