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Author Topic: lower frequencies on 555 based synth...  (Read 259 times)
jamiewoody
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« on: March 15, 2010, 09:15:19 AM »
i have been breadboarding like crazy and making a lot of discoveries.

if i am making a simple 555 based synth circuit, how do you make a lower frequency? i tried higher resistors, which i had in stock, a 51k and a 47k...this seemed to make somewhat of a difference, but it also seemed to crash more.

advice?
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noystoise
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« Reply #1 on: March 15, 2010, 04:32:31 PM »
use bigger caps like 1uf-10uf. should help.
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Circuitbenders
crustypaul
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This person is dangerously insane.
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« Reply #2 on: March 15, 2010, 07:31:14 PM »
Check out the 'Choosing R1, R2 and C1' section on this page:

http://www.kpsec.freeuk.com/555timer.htm
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jamiewoody
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« Reply #3 on: March 15, 2010, 09:33:24 PM »
i'll check these things out...thanks!

is there a formula (in layman's terms) for capacitance and frequency?  higher capacitance=lower frequency?
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