2007-08-26 04:32:16 · 2 answers · asked by 'Ya 1 in Science & Mathematics ➔ Engineering
Well this depends on what range you're looking for. If you're looking for a small capacitor range, I would look into just getting a variable capacitor (varactor), they already exist.
2007-08-26 04:41:54 · answer #1 · answered by Anonymous · 1⤊ 0⤋
you can get a BCD thumb switch and use it to dial up decimal cap values. the caps you need would be the sequence 1-2-4-8. the switch would then allow you to dial up 0-1-2-3-4-5-6-7-8-9. these thumb switches are designed to be combined to get decade sequences. you would need capacitors 10-20-40-80 to get the next sequence. Remember that caps may not have precise tolorances so that will limit the precision of such a device. the switches have some residual capacitance, so it would not be accurate at very small, pico farad sizes.
2007-08-26 18:04:25 · answer #2 · answered by lare 7 · 0⤊ 0⤋