LDM #188: Bendix flight computer amplifier18701-1A: Repeat Cycle Timer @lelabodemichel5162

Le labo de Michel | LDM #188: Bendix flight computer amplifier18701-1A: Repeat Cycle Timer @lelabodemichel5162 | Uploaded 3 years ago | Updated 2 hours ago
This video shows the teardown of the Repeat Cycle Timer. It uses a tuning fork oscillator working at 2048 Hz followed by a frequency divider made with 6 dual JK flip-flops. The tuning fork is inside a small housing and was probably vacuum sealed.

00:00 - Intro
00:15 - Teardown
02:25 - All the magic
03:06 - Reverse Engineering
03:42 - Oscillator board
05:01 - Power Supply and Output Stage board
06:23 - Tests

More about tuning fork oscillators:
radiomuseum.org/forum/tuning_fork_oscillators.html

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