Norman Lathrop Enterprises  
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

VOLTAGE PROBE
xx   VOLTAGE MONITOR

Electrostatic voltage probe will determine if AC terminals, sockets, or extension cords are live without connecting a voltmeter.
ELECTRONICS NOW Dec 1998 (v.69#12) pg. 53

AC/DC indicator circuit can distinguish between AC or DC voltages, positive or negative DC voltages, and indicate the presence or absence of a voltage.
POPULAR ELECTRONICS [2] Feb 1991 (v.8#2) pg. 83

Simple voltage probe can check for live AC or DC circuits in equipment being repaired.
POPULAR ELECTRONICS [2] Nov 1991 (v.8#11) pg. 22

Voltage probe lights a red LED when connected to 1.25-volts or more and a green LED when voltage is less than 1-volt. Low-frequency pulses with an amplitude of 1.5 volts or greater will cause both LED's to light.
POPULAR ELECTRONICS [2] Sep 1992 (v.9#9) pg. 70

Cordless voltage probe uses a piezoelectric buzzer to indicate the presence of a voltage. Can also become a continuity tester with the addition of a 9-volt battery.
POPULAR ELECTRONICS [2] Mar 1999 (v.16#3) pg. 47