Old Book Teardown #20: Encyclopedia of Electronic Circuits Volume 7 (1999) | In The Lab

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Silly Job Title: Charge Changer. I am the Charge Changer!

In this video we take a look inside Encyclopedia of Electronic Circuits Volume 7 by Rudolf F. Graf and William Sheets.

Some circuits of interest included:

Page Circuit
385 DTMF Infrared Transmitter
524 FET Tester
916 Electronic Parrot
925 Voice-Effects Simulator Circuit

And some new terms that we learned were:

  • VFO: Variable-Frequency Oscillator
  • LM3914, LED Driver, similar to LM3915 and LM3916
  • MMIC: Monolithic Microwave Integrated Circuit
  • Balun: balanced to unbalanced; balancing unit
  • NE602: signal processing IC

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Old Book Teardown #19: Encyclopedia of Electronic Circuits Volume 6 (1995) | In The Lab

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Silly Job Title: Technical Director. I am the Technical Director!

In this video we take a look inside Encyclopedia of Electronic Circuits Volume 6 by Rudolf F. Graf and William Sheets.

Some circuits of interest included:

Page Circuit
387 Heartbeat Transducer
531 Geiger Counter
663 FM Bug

And some new terms that we learned were:

  • AGC: Automatic Gain Control
  • ALC: Automatic Level Control
  • IF: Intermediate Frequency
  • He: Helium
  • Ne: Neon

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Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!

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Old Book Teardown #18: Encyclopedia of Electronic Circuits Volume 5 (1994) | In The Lab

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Silly Job Title: Switch Switcher. I am the Switch Switcher!

In this video we take a look inside Encyclopedia of Electronic Circuits Volume 5 by Rudolf F. Graf and William Sheets.

Some circuits of interest included:

Page Circuit
150 Bug Detector
224 IR Pulse Audio
256 Simple Lie Detector
257 Chapter 49: Light Comms
326 Voice Disguiser
373 Chapter 61: Moisture and Fluid Detectors
554 Speech Scrambler
556 Chapter 93: Sound Effects

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Old Book Teardown #17: Encyclopedia of Electronic Circuits Volume 4 (1992) | In The Lab

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Silly Job Title: Capacitor Captain. I am the Capacitor Captain!

In this video we take a look inside Encyclopedia of Electronic Circuits Volume 4 by Rudolf F. Graf and William Sheets.

We noted while going through the book that πP is short for “microprocessor”, or, essentially what we’d just call a CPU these days.

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Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!

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