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Author Topic: Restoring an old 1968 hp 200AB audio odìscillator  (Read 629 times)

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Offline walter.brolloTopic starter

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Restoring an old 1968 hp 200AB audio odìscillator
« on: February 22, 2023, 06:38:03 am »
Hi, here:  you can find an interesting video on restoring a 1968 hp 200AB audio odìscillator
« Last Edit: February 22, 2023, 06:41:57 am by walter.brollo »
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Offline jonpaul

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Re: Restoring an old 1968 hp 200AB audio odìscillator
« Reply #1 on: February 23, 2023, 03:45:04 am »
see Linear Technology the late and great Jim Williams long papers and notes,on exactly the theory, invention and restoration of Hewlett Packard's 1936 Pioneering 200 audiovisuelle oscillator

jon
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