Any of you EE types out there know of a simple single supply DC
inverter amp?

Here is what I am thinking. It is working but not optimized yet. I
am working on a simple hardware solution to using the ignition with
existing EFI computers controlling engines.

Paul Lamar


12V to 5V? You can use a Cigaret lighter to USB converter for it.
Standard output is 500mA on 5V.

Henry


I can use a 5 v regulator on the board but I don't need
a lot of current CMOS parts


In order to adapt LI multi strike ignition to an existing RX8 computer
controlled ignition over a wide RPM rangeI need a variable period trigger
so I always get six sparks regardless of the engine rpm. That implies a voltage
to frequency converter. Now I need to vary that voltage with RPM.
For higher RPM higher voltage. No problem! Accumulate constant width
pulses in a large capacitor. It is called an analog tach circuit.

The voltage to frequency converters I found on the market so far are more
complicated than I desired so I invented one based  on the ever versatile
CMOS 555. It worked far beyond my greatest  expectations. Here it is along with
some of the other circuits.  I fell off the work bench again just like what
happened when I discovered the ign circuit :)

Of courses all this can be done with a microcomputer but where is
the challenge in that :)

Paul Lamar


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