More DIY EGOR

[kb4mxo]

DIY_EFI Digest wrote:

The main reason this data was taken was to set the delay time from 5v to 10v to the heater . My heater circuit is crude but cost
effective . It uses a 7805 with a zener in the ground leg to set the 10v supply . At startup the micro bypasses the zener to give 5v
to stop high inrush current then removes the bypass of the zener to apply 10V .  Note at low battery the unit will drop below 10v
and will reset the micro making it soft start at 5V .  I always have a alternator in the car so this is no problem and in a race car
we run a separate 15v supply. The main reason I like the regulators I has internal current limit and makes a very cheap heater with
very low parts count and mounting the regulator is fairly fool proof because  of the popularity in the kit market.

Thanks

Steve

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