PLL 4046 for Beginners (Pitch-Tracking, too!)

Ayab · Joined: Oct 27, 2015 Posts: 186 Location: London, UK

Will try +/- 6V as I happen to have a couple of spare L7906 from a Moog clone project.

"Everywhere you see -V, replace that with -6. Everywhere you see the ground symbol, replace that with +6" - OK!

If I use the attached L7906 circuit for converting -12v to -6V (& similar for +12V to +6V) would the only ground connections be from +/-12V psu ground to these +/-6V voltage regulator sub-circuits? There would be no ground connection to the PLL.

And this would need to be amplified.

If I chose +12V and ground I would not have to use the voltage regulator circuits but I would need to offset the output signal to centre it around 0V.

Thanks for your patience here. Sorry to be a so stupid but am hopefully learning! And hope this is useful for others.

Adaptor -6V L7906 parts placement (also see CP15 has different 79L06 circuit)Placement.pdf

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JovianPyx · Posted: Fri Jan 18, 2019 8:11 am Post subject:

Ayab · Joined: Oct 27, 2015 Posts: 186 Location: London, UK

Thanks so much for confirming that Scott -you rock!!

Hope I manage to build it without frying too many bits -including myself. Will test with doubled up 9v batteries and a test oscillator so as not to fry my working modules.

(on a long train/bus journey and getting stuck into a forest mimes electronics for dummies and loving the handwriting and illustrations - and it is a fascinating read).
Smile