Road rage application query

[LaceSensor]

Hi.

Suppose I have a positive ground effect that runs off 15/18/24V
Is it possible to chain two road rage together, to first make an inverted supply, then charge pump that "up" ?

Or am I talking crazy

Ta!

[LaceSensor]

anyone?

[madbean]

AFAIK, yes, although you would need to switch the polarity of the charging caps on the second RR.

However, you could also do this with one charge pump---same idea except you pump up the negative voltage side. You would need to lay it out on perf or a new PCB, though. Keep in mind also what effect you are supplying and what it's current requirements are. A TC/MAX1044 will give you about 20mA. The LT1054 provides about 100mA.

[LaceSensor]

AFAIK, yes, although you would need to switch the polarity of the charging caps on the second RR.

However, you could also do this with one charge pump---same idea except you pump up the negative voltage side. You would need to lay it out on perf or a new PCB, though. Keep in mind also what effect you are supplying and what it's current requirements are. A TC/MAX1044 will give you about 20mA. The LT1054 provides about 100mA.

Awesome, ok thats promising.
I want to convert my EHX big box (24v power supply type) Micro Synth to be able to run off my regular pedal board 9v power supplies.

I have a 12v output DC on the power box I use, Therefore, I plan to provide 24v using charge pump, but its need to be positive ground.

I must admit all this stuff confuses me a bit.

[Scruffie]

How old is the Microsynth, does it use the NE5554 regulator?

The new one actually puts out 9V & -10V from its power section... which is a bit of an odd one.

And it's bipolar so you need positive, negative and ground.

[LaceSensor]

Hi

Its a 90s "big box" style reissue which uses the 24v power adaptor. Havent had it apart yet.

Any tips so I can run it off 12v or 9v DC input would be super.