On 08/08/2018 11:30 PM, 2G wrote:
"the only instrument in your panel that
might draw a bit less current is a transponder"

I seriously doubt it. All modern avionics are designed to operate over a wide input voltage range; they have internal dc-dc conversion circuits that transform the supply voltage to a regulated, operating voltage. Trig, for instance, specifies an input voltage of 11 to 33 V.

Tom


So does an LX9000 count as a piece of modern avionics? 12 volts
nominal, 10-16 volts min to max. How about a Becker 4201 radio? 12.4
min, 15.1 max, 13.8 nominal. There's very little avionics used in
gliders that have dc-dc converters, they're included in transponders
because you can't generate 300 watt pulses using battery voltage, you
have to step it up with a converter.

Dave