Solving Impossible Problems with Dan Gelbart

This interview with Dan Gelbart looks interesting, but I don’t have two hours spare to watch it! You can learn more about Dan Gelbart here: The optimistic inventor: Dan Gelbart, Weizmann-identified whiz kid, recalls a storied career. His popular YouTube channel is here: https://www.youtube.com/dgelbart.

Learning the Art of Electronics: 1L.4.3 10 mA Ammeter | In The Lab With Jay Jay

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Silly Job Title: Electron Herder. I am the Electron Herder!

In this video we continue to work our way through Learning the Art of Electronics. In this video we continue with 1L Lab: DC Circuits and make a 10 mA ammeter with our meter movement.

We use the 5V LED we made last weekend to test our ammeter.

We use the Riden RD6006 Bench Power Supply to power our test circuit.

We use the EEVblog BM2257 Digital Multimeter to measure the resistance of our 100 µA meter movement.

We use the Multicomp Pro MP701033 Resistor Decade Box for our 23Ω shunt resistor.

We use the Carpenter Mechanical Pencil to take notes.

We use the Kaisi S-160 45x30cm Repair Mat as our workspace.

Thanks very much for watching! And please remember to hit like and subscribe! :)

p.s. if you’d like to see the making of the 5V LED circuit we used to test our ammeter, that is here: Electronics Project #25: Variable Brightness LED for Testing Ammeter | In The Lab With Jay Jay.


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DAZZLEEX 20pcs Precision Drill BitsThis is an image of the product.

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Picking low noise resistors

Hans Rosenberg runs us through what we should know about resistor noise and how to avoid it. The bottom line is to avoid carbon composition, thick film, carbon film, and metal oxide film; and prefer thin film, metal film, wirewound (watch inductance), and bulk metal foil (expensive but best).

Today I added wirewound to my spell check.