See all articles from Time Designs Magazine v4 n5
THIS LITTLE CIRCUIT DETECTS ANY VOLTAGE FROM 2 TO 125 VOLTS, A.C. OR D.C.
RED LED – DC, Probe positive
GRN LED – DC, Probe negative
BOTH LEDs – Alternating
967 lamp indicates higher voltages, starting about 15 volts, A.C. or D.C.
INPUT: 2-125 V. AC or DC
967 lamp may be ordered through any electronic supply house or catalog
Build into pen or small plastic vial.
BE CAREFUL With ELECTRICITY
by G.Fleming
LVR H.S.
NELSON, B.C.
drawn by: F.Nachbaur