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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.


Circuit schematic for a constant current source.
AUDIO AMATEUR 3/1986 [Aug 1986] (v.17#3) pg. 42

Constant-current regulator. Build a low-cost version with two ranges (0-40mA and 0-400mA) and ways to use a constant-current regulator.
AUDIOXPRESS Jul 2001 (v.32#7) pg. 52

Circuit for an electronic load resistor that can be preset for any current desired (0 to 10 amperes) over a voltage range (1.2 to 50 volts). Allows only that pre-set current to flow through.
CQ. THE RADIO AMATEUR'S JOURNAL Jun 1993 (v.49#6) pg. 85

Inrush current limiter. Protect sensitive electronics from startup power surges with this stand-alone or embedded soft start circuit.
ELECTRONICS NOW Dec 1992 (v.63#12) pg. 47
Correction ELECTRONICS NOW Mar 1993 (v.64#3) pg. 16
Added Info ELECTRONICS NOW Sep 1993 (v.64#9) pg. 14

Simple circuit to "float charge" a 12-volt battery (or to power a heavy load that operates intermittently, such as a ham radio transmitter) uses two 12-volt 1-amp light bulbs as current limiters.
ELECTRONICS NOW Sep 1995 (v.66#9) pg. 8

Using the constant-current source (CCS), a circuit that will sink or source the same current regardless of changes in load resistance or power supply voltage.
ELECTRONICS NOW Oct 1998 (v.69#10) pg. 53
Correction ELECTRONICS NOW Dec 1998 (v.69#12) pg. 18

Safe transformer sleuthing. This current-limiting circuit combined with a Variac provides a safe way to track down the primary leads to a transformer.
GLASS AUDIO 2/2000 (v.12#2) pg. 69

Current limiter circuit is adjustable from 0.5 to 8 mA and can be used with circuits having supplies ranging up to 30-volts. Can be modified to handle current from 5 mA up to 200 mA.
HANDS-ON ELECTRONICS Aug 1988 (v.5#8) pg. 93

Electronic overload protection. Current limiter for your semiconductors. Adjustable for 10 to 100 mA.
POPULAR ELECTRONICS [1] Mar 1970 (v.32#3) pg. 54

Current-limiting techniques. How to protect power transistors from overload damage.
POPULAR ELECTRONICS [1] May 1982 (v.20#5) pg. 62

Voltage regulator applications. (1) In-rush current limiter circuit keeps current at the rated operating level of the device to be protected. (2) Visible-light transmitter circuit. (3) Visible-light receiver circuit. (4) Using two common voltage regulators to vary both voltage and current. (5) Circuit to control a small DC motor or small lamp.
POPULAR ELECTRONICS [2] Mar 1992 (v.9#3) pg. 70

All about current-crowbar circuits which can shut down a power supply if a preset current value is exceeded. Four circuits shown.
POPULAR ELECTRONICS [2] Apr 1995 (v.12#4) pg. 59
Added Info POPULAR ELECTRONICS [2] Jul 1995 (v.12#7) pg. 4

Precision current source is used to test LED's, laser diodes, Zener diodes, and bipolar transistors.
POPULAR ELECTRONICS [2] May 1995 (v.12#5) pg. 31

Incandescent-lamp life-extender circuit works with lamps that operate from 1.5 to 12 volts and a current of 1 amp or less. It works by controlling the maximum current getting to the lamp.
POPULAR ELECTRONICS [2] Sep 1995 (v.12#9) pg. 73

Simple single-transistor circuits. (1) Voltage regulator outputs 6-volts DC. (2) Constant-current output. (3) Simple audio amplifier. (4) Impedance-matching circuit. (5) LED-control circuits turn either off or on in the presence of a DC voltages from 5- to 9-volts. (6) Relay-driver circuit has a latching feature that keeps the relay on once energized.
POPULAR ELECTRONICS [2] Dec 1995 (v.12#12) pg. 77

How to use adjustable or programmable DC power supply (voltage) regulators to control current instead of voltage.
POPULAR ELECTRONICS [2] Mar 1998 (v.15#3) pg. 56