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Video showing the procedure to make (DIY) printed circuit boards using toner transfer paper.

An animated look into spark gaps and a model built in LTSpice to simulate their operation.

An animated review of the procedure to build a sheet aluminum enclosure for a high voltage DC power supply.

An animated review of the design and construction of a 6000V DC power supply using the transformer from a microwave oven.

An animated tutorial about using NPN and PNP transistors in switching mode.

An animated guide to using sine and cosine in electronic applications, with an example based on DTMF signals.

An animated tutorial about the 7400-series NAND gate.

An animated tutorial about using the 555 timer chip in astable, or continuous, mode.

An animated tutorial about the use of LEDs Light emitting diodes.

An animated analysis of the effect of a tailwind on the descent and landing profile of a 737 in the vertical plane.

Candidates in the US 2020 election and their songs.