This video shows from beginning to end, the repair of an old radio from the 1938 era. This Stromberg Carlson 240-H chassis was the Cadillac of the time. It’s an 11 tube superheterodyne receiver with push-pull output, an IF section with 3 selectable response curves, and a lot more.
This is a quick review of this little, Smart Multimeter. See if this meter is what your looking for.
This Video explains (step by step) how to determine the DC Current gain, DC beta, or “static forward Current transfer ratio” of two small signal 2N3904 Transistors, using a Curve Tracer.
Quick video on how to identify unknown transistors using a curve tracer. This video focuses on “hfe” AC Beta or AC Current gain, which is a dynamic current gain measurement.
This Video explains how I repaired this Husky Pro compressor. I also modified the cooling system, and gave it a status box with LED indicators. Really handy to see if I have the breaker on or off for the garage.
Here is a Tip many people overlook when servicing circuit boards. You will be surprised how obvious this problem is. The question is, why do the manufacturers keep doing this?
Short video showing how to test relays with a modified oscilloscope. Identify contact bounce, burned contacts, contact resistance, sticking relays, and faulty internal structure.
To View all my Videos individually, Click the Videos tab above this video, or depending on your view, click the small, Mr Carlson’s Lab above the red subscribe box.
This Video looks at some of the more common transistors, and shows you how to test them easily with the “diode test function” of your DMM. The transistor in the intro picture isn’t so common, but it was kind of photogenic.
Trying the TDR ( Time Domain Reflectometer ) with different oscilloscopes. First, the old Tektronix 547 shows it’s stuff, then the TDS220 oscilloscope, soon after.