styroseal capacitor - need substitute?

[adiputra]

Hi guys,

Recently i was looking some of the metal detector such as ETI 561 - Simple Sensitive Metal Detector. In this project it use a styroseal capacitor. Could anyone tell me what kind of this type of capacitor it is? I intended to make this project for my cousin (giving him time to spend during school holiday). I can't find this capacitor, maybe it was obsolete a long time ago. Or maybe i can substitute/replace it with other type like ceramic capacitor? Any suggestions?

[Davor]

Polystyrene or polypropylene should do, but you'll have to guesstimate temperature coefficients. Most probably negative.

[adiputra]

Polystyrene or polypropylene should do, but you'll have to guesstimate temperature coefficients. Most probably negative.

Thanks for the reply Davor, appreciated it.

[Skippy]

Styroseal are polystyrene capacitors. Similar modern parts would be the FSC/EX series, eg.:http://uk.farnell.com/lcr-components...1?Ntt=952-0651

[adiputra]

Styroseal are polystyrene capacitors. Similar modern parts would be the FSC/EX series, eg.:http://uk.farnell.com/lcr-components...1?Ntt=952-0651

Hi Skippy,

Thanks for reply, just one quick question want to ask you, can i use polyster or mylar capacitor for this metal detector project?

[porkluvr]

Don't do that unless you want to have to constantly fiddle the frequency knob to compensate for drift.

[adiputra]

Don't do that unless you want to have to constantly fiddle the frequency knob to compensate for drift.

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Thank you Porkluvr for the reply, appreciated it.