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November 25th 05, 06:04 PM
posted to de.sci.electronics,rec.radio.amateur.homebrew,sci.electronics.components,sci.electronics.design
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Unusual functions of cheap parts
On Fri, 25 Nov 2005 12:46:17 +0100, Jorgen Lund-Nielsen
wrote: John Larkin wrote: On Thu, 24 Nov 2005 18:30:06 +0100, Jorgen Lund-Nielsen wrote: Henry Kiefer wrote: Hi all - After my first thread going from "standard" cheap parts for up to vhf frequency to a discussion about the usefulness of Spice simulator...... I try it another time hopefully get attention of frustrated co-readers: For example the rechtifier diode 1N4007 can be used as a rf switching diode, for example as rx/tx-switch. This is because it is a pin structure diode. This type is cheap and you can get it almost everywhere. It shows good performance for the price. Surely for high-end you should do it with another type tuned to the application it is made for. But anyway it works in some circuits. Do you know of other interesting devices or circuits good for misuse? Best regards - Henry Tuner Switching Diodes like the european BA244 (NOT PIN-Diodes!) work well as medium fast Step Recovery Diodes. Tell me about it. I tried some pins to see if they would snap, and they turn out to have incredibly mushy reverse recovery, Slop Recovery Diodes. I'll have to try the varicaps. John Hello John, I wrote: NOT PIN - Diodes - as they wouldn't snap. I got that! i mean Band Switching diodes for TV-Tuners like the BA244 and the BA682. BA682 Datasheet: http://www.vishay.com/docs/85530/85530.pdf - and they snap! Try it! OK, I'll try some. Thanks John |
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