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9th June 2009, 06:26 PM
| #1 |
 simple sound to light
simple sound to light circuit designed as an add on for a dalek voice mod i built a while back....you can add a preamp before the line amp if you wish to amplify any audio signal from a microphone(electret etc) circuit shows 3 leds but u can add more if you wish(within reason...) i used 4 hi brightness blue leds
__________________ all "txt speak" has been removed from this post for the benefit of all other forum members who may get confused!!! Last edited by sheldonstv; 12th June 2009 at 03:44 PM. | |
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9th June 2009, 08:49 PM
| #2 |
Hi Sheldon, You have the pins of the opamp labelled backwards on the line amplifier: Pin 2 is the inverting input. pin 3 is the non-inverting input.
__________________ Uncle $crooge | |
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9th June 2009, 08:57 PM
| #3 | |
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__________________ Eccentric millionaire financed by 'er indoors | ||
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9th June 2009, 09:30 PM
| #4 | |
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__________________ Uncle $crooge | ||
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12th June 2009, 02:12 AM
| #5 |
that is exactly right they were reversed ive uploaded a replacement pdf file with the error corrected....gremlins must have swapped things round when i did that schematic...........
__________________ all "txt speak" has been removed from this post for the benefit of all other forum members who may get confused!!! | |
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12th June 2009, 12:50 PM
| #6 | |
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Now the polarity of the output capacitor of the amplifier is backwards.
__________________ Uncle $crooge | ||
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12th June 2009, 03:46 PM
| #7 |
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another corrected pdf file uploaded definately got some gremlins......
__________________ all "txt speak" has been removed from this post for the benefit of all other forum members who may get confused!!! | |
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| Tags |
| light, simple, sound |
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