HOW TO TEST YOURSELF
jack. Plug the phono jack into the receptacle marked “INPUT”,
and unscrew the plastic housing on the jack to expose the two
posts for attaching wires. Each post should have a small hole in
it to attach a mini-grabber lead. If there are no holes use alliga-
tor clip leads, but slip a piece of plastic tape between the posts
to make sure the alligator clips do not touch each other.
Item discussed Radio Shack Cat. No.
speaker Archer Mini Amplifier Speaker 277-
1008C
1/8 inch phono jack Two-conductor Phone Plugs 274-286A
(package of 2, you only need 1)
AC/DC adapter (optional) 273-1455C
You are now ready to build the main circuit.
I describe four ways to make a Syncrometer,TM the circuit
you can use to test yourself and products:
- The Easy Way: buy the 200 in One Electronic Project
Lab by Science Fair, Cat. No. 28-265 or Cat. No. 28-262,
at Radio Shack for about $50.00, follow the instructions
for connecting The Electrosonic Human, then modify the
connections as described below - The Economical Way: just buy the parts at Radio Shack
for about $35.00, and follow the detailed instructions be-
low (no soldering required) - The Rugged Way: use the parts list, schematic and your
electronic expertise - The Dermatron Way: I discovered this method by mak-
ing some modifications to a commercially available
$750.00 ViTel.TM A dermatron is a device invented dec-
ades ago to measure body resistance (as opposed to skin
resistance which is what lie detectors measure). If you