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Low/Mirco Power
Circuits Page 1
Low Power (flea power): #'s 1.5-2,
#'s 3-A, C-E,
F-K, L,
M, N-Q,
R-T, U,
V-Z
Last Updated on:
Monday, October 03, 2011 06:07 PM |
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Circuits Designed by Dave Johnson, P.E. : |
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1.5V LED FLASHER VERSION A
Judging from the numerous references I have received,
this electronic circuit, hobby circuit seems to be rather popular. Many
published circuits which flash LEDs need 3 or more volts. This electronic circuit
uses only a single inexpensive C-MOS IC and flashes the LED for a full year on a
single 1.5 volt AA alkaline battery cell. The circuit uses a charge pump technique
to provide the LED with the needed voltage. This electronic schematic will
only work on red, green and yellow LEDs. It is not be able to flash white
LEDs.
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1.5V LED FLASHER VERSION B
To squeeze even more energy from a alkaline
battery cell, this circuit adds two transistors to a circuit similar to the above
design to boost the efficiency. A small 1.5 volt alkaline N cell should flash the
LED for a full year. It too uses a "charge pump" technique to provide a LED the
needed voltage.
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1.5V TOUCH ACTIVATED SWITCH
A single 1.5v silver oxide button cell powers
this complete touch activated switch circuit for 5 years.
It features both a normally open and a normally closed set of solid state
switch thermals. It also has an
adjustable sensitivity, which can be set for a touch capacitance change as small as
1 picofarad.
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2 LINE TELEPHONE LINE STATUS INDICATOR
Many home businesses use multiple phone lines. This circuit gives you a visual
indication when a line is in operation. The two AA battery cells should provide
enough power for about one year of operation. The circuit is line polarity
insensitive.
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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0.2V Supply Voltage Nanopower Inverter Circuit - Circuit Ideas for Designers
Application Notes Advanced Linear Devices, Inc....[App Note] |
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0.2V Supply Voltage Nanopower Two-Inputs NOR & NAND gates - Circuit Ideas
for Designers Application Notes Advanced Linear Devices, Inc....[App Note]
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1 Line Telephone Line Status Indicator - This circuit is similar to the
above circuit, but only monitors one phone line....[Designed by David A. Johnson] |
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1.5V LED Flasher Version A - Many published circuits that flash LEDs need 3
volts or more. This circuit uses only a single inexpensive C-MOS IC and flashes
the LED for a full year on a single 1.5 volt AA alkaline battery cell. The circuit
uses a charge pump technique to provide the LED the needed voltage. …. [Hobby Corner
Circuit by Dave Johnson] |
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1.5v LED Flasher Version B - To squeeze even more energy from a alkaline
battery cell, this circuit adds two transistors to a circuit similar to the above
design to boost the efficiency. A small 1.5 volt alkaline N cell should flash the LED
for a full year. It too uses a "charge pump" technique to provide a LED the needed
voltage....[Designed by David A. Johnson] |
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1.5v Touch Activated Switch - A single 1.5v silver oxide button cell powers
this complete touch activated switch circuit for 5 years. It features both a
normally open and a normally closed set of solid state switch thermals. It also
has an adjustable sensitivity, which can be set for a touch capacitance change as
small as 1 picofarad. …. [Designed by David A. Johnson] |
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2 Line Telephone Line Status Indicator - Many home businesses use multiple
phone lines. This circuit gives you a visual indication when a line is in
operation. The two AA battery cells should provide enough power for about one year of
operation. The circuit is line polarity insensitive....[Designed by David A. Johnson] |
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Low Power (flea power): #'s 1.5-2,
#'s 3-A, C-E,
F-K, L,
M, N-Q,
R-T, U,
V-Z |
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