Power Measurement Basics

[MarkE]

Is SP3T as great and dangerous a secret as DPDT?

[TinselKoala]

Aw shucks fellas it were nothing. (I already had the photo, from work done on the scope last year, all I had to do was add the captions.)

I've learned a lot from that old scope. I brought it back from the dead, twice, and calibrated it fully according to the service manual. It has that beautiful blue persistent phosphor CRT which looks really neat with the orange graticule illumination. Keeps the room warm in winter, too.

Anyhow... carry on please, don't mind me.

[TinselKoala]

Is SP3T as great and dangerous a secret as DPDT?

The really frightening thing is that the switches are DP3T. There is a whole gang of unused contacts, just waiting to cause mischief. The mind boggles!

[MarkE]

DP3T may be entering areas of planet level security.  Have you considered what might happen if the second set of contacts were used to select between:  DC / AC / Gnd of the first set, and:  DC / AC / Gnd + series inductor, and DC / AC / Gnd + parallel inductor?  Have you considered what might happen if the right kind of cheese were to get involved?