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Old November 26th 05, 11:04 PM posted to de.sci.electronics,rec.radio.amateur.homebrew,sci.electronics.components,sci.electronics.design
Henry Kiefer
 
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Default Unusual functions of cheap parts

The 4007 is the classic crystal oscillator circuit.
Don't forget the temperature characteristics!

- Henry

"Murray" schrieb im Newsbeitrag
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Frithiof Andreas Jensen wrote:

"Henry Kiefer" skrev i en meddelelse
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Do you know of other interesting devices or circuits good for misuse?



Unbuffered logic gates can make a really bad but still useful analogue
amplifier by adding feedback and bias.


E.G the CMOS 4007. See the old handbooks for a '100dB
amplifier' based on a RCA chip - there was a wiring
error in that old description - IIRC it was 3800? -
whatever, the 4007 is the same chip.

Murray vk4aok