Search found 4 matches

by dvanhorn
Thu Aug 05, 2004 9:41 am
Forum: Theremin Forum
Topic: Antennae: Longer better?
Replies: 7
Views: 13845

I should mention, I just posted on this in more detail, on Levnet, with a discussion on finding the "sweet spot" in tuning the pitch osc near, but just above, the antenna's self-resonant point. It seems to make for better control.
by dvanhorn
Thu Aug 05, 2004 9:39 am
Forum: Theremin Forum
Topic: Odd Model
Replies: 1
Views: 6685

Triplett 132

What info are you looking for?
by dvanhorn
Thu Aug 05, 2004 9:36 am
Forum: Theremin Forum
Topic: Antennae: Longer better?
Replies: 7
Views: 13845

I've been looking at the antenna shape, and I think it does make a difference. The antenna rod acts as a capacitor, and it's capacitance to "ground" is going to be proportional to it's surface area (NOT shape!) so as far as the basic tuning goes, no the shape has no interesting properties there ...
by dvanhorn
Thu Aug 05, 2004 9:23 am
Forum: Theremin Forum
Topic: Power Supply Question
Replies: 4
Views: 9963

Power supply

If there's suficient interest, I can design something simple.
Think in terms of four inexpensive transistors, and a 555 oscillator.

The power supply does require AC, but it's not a lot of current, so this wouldn't be bad to build. I haven't tried mine on an inverter yet, but even if the inverter ...