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SCC2 10 Amp Solar Charge Controller: (electronic circuit added 4/05) |
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SCC2 1012/24 Volt Solar Charge Controller: (electronic design added 9/02) |
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SCC3 20 Amp 12V Solar Charge Controller: (electronic circuit added 10/05) |
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Self Powered Solar Box Furnace: (electronic Circuit diagram added 03/03) |
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Sensor Electronic Tracker with H-Bridge Drive: (circuit / design added 8/03) |
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Sensor Electronic Tracker with Simple Solar Charge Controller: (circuit / design added 8/03) |
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Seven Component Regulated LED Lamp: (circuit / design added 8/03) |
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Shunt Battery Charger Provides 1A Continuous Current: 11/20/97 EDN Design Ideas / (added 2/03) Most battery chargers use
nothing more than a series-pass regulator with current limiting. In solar-powered systems, you can't count on having sufficient head room to keep a series regulator alive, so a shunt method is
preferable. An example of a simple shunt battery charger consists of an op amp driving a shunt transistor and ballast resistor (Figure 1). The heart of the circuit is IC1, an LT1635, which
contains an op amp and a reference. Operation is straightforward. A feedback divider comprising two 1-Mega-ohm resistors senses the battery voltage. The circuit amplifies the internal 200-mV
reference to 7.05V and compares this voltage with the feedback signal.... |
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SIMD1 V0: Nocturnal-Controlled Solar Engine: The original SIMD1, the V0 does its magic with just a resistor and a
Germanium diode. (added 11/05) |
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SIMD1 V1: Nocturnal-Controlled Solar Engine: The V1 is just like the V0, but with polarities reversed. (added
11/05) |
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SIMD1 V2: Nocturnal-Controlled Solar Engine: The V2 has two flavors, essentially modifications of the V0 and V1, but
with a transistor and resistor replacing the diode. This variant turns on earlier (i.e., before it's so dark) and "cleaner" than the V0 and V1. (added 11/05) |
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SIMD1 V3: Nocturnal-Controlled Solar Engine: The V3 is very similar to the NPN flavor of the V2, but with the addition of a
FET on the output line. This makes life easier for its attached load. (added 11/05) |
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SIMD1/Solar Regulator: Nocturnal-Controlled Solar Engine: The SIMD1 / Solar Regulator supplies a constant 2V after
triggering and permits driving LEDs with constant brightness without the need for current limiting resistors. (added 11/05) |
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Simple train detector using ambient light and a photocell: (circuit / schematic design added 6/06) |
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SmartCap solar engine: Bob Shannon originally designed the SmartCap solar engine for a specific purpose -to provide a
"burst" of energy to a 'bot right after its source of light goes away. The idea was to introduce a specific behavior -when things got dark for the 'bot, it would have the energy to notice and
scurry toward the next spot of bright light. (added 11/05) |
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Solar Car Array Controller Schematic: (circuit / design added 8/03) |
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Solar Car Battery Monitor Schematic: (circuit / design added 8/03) |
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Solar Car Brake Controller Schematic: (circuit / design added 8/03) |
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Solar Car Display Controller Schematic: (circuit / design added 8/03) |
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Solar Car Electrical Design and Circuit index: (circuit / design added 8/03) |
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Solar Car Main Controller Schematic: (circuit / design added 8/03) |
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Solar Cell Battery Charger: (electronic circuit added 11/06) |
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Solar Cell Converter offers Positive Start up: 08/15/96 EDN Design Ideas / (schematic / circuit added 10/02) |
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Solar Cell NiCad Charger: (electronic Circuit / Schematic (added 02/05) |
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Solar Cells implement Low Cost Illuminator: 09/12/97 EDN-Design Ideas / (added 3/03) |
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Solar Charge Controller: (circuit / design added 8/03) |
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Solar Charged LED Flashlight: (electronic design added 9/02) |
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Solar Charger for Lead Acid Batteries: Solar lead acid charger, with battery voltage monitor, for12V battery (added 4/02) |
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Solar Current Meter: (electronic design added 9/02) |
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Solar Current Meter #2: (electronic (schematic / circuit added 4/02) |
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Solar Engine Circuit: Utra Efficient circuit runs small DC motor in a poorly lit room (added 2/05) |
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Solar Panel Charge Controller/Low Voltage Disconnect Circuit: Lead acid charger, with battery voltage monitor, power comes
from solar panels (added 4/02) |
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Solar Panel Charge Controller/Low Voltage Disconnect Circuit #2: (circuit / design added 8/03) |
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Solar Panel Current Meter: (circuit / schematic design added 6/06) |
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Solar Powered LED Garden Light : Reverse engineered circuit diagram of a popular mass produced solar light. The light
automatically turns on when there is no light falling upon the solar cell, so the parts count is minimal. The charging circiut is not particularly efficient since the battery must charge
through a plain diode. (added 2/05) |
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Solar Powered motor runs on 10 nA: 03/18/04 EDN Design Ideas / (added 1/05) Designs for solar-powered
applications with low-duty-cycle requirements can often rely on capacitors for energy storage in place of less reliable batteries. Typical applications include solar positioning, telemetry
transmitters, chemical pumps, data loggers, and solar-powered toys. The circuit in Figure 1 can run a small pager motor from the output of a small calculator-type solar cell in near...... |
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Solar Powered Reading Lamp: (electronic circuit added 10/05) |
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Solar Revolver: A single-chip solarroller circuit with reverse and turning capability; based on a 1381 SE. (added
11/05) |
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Solar Robots: (circuit / design added 8/03) |
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Solar Step Down Regulator: (circuit / design added 8/03) |
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Solar Tracker: (circuit / design added 8/03) |
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Solar Tracking Control System: (circuit / design added 8/03) |
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Solarbotics NV-Based Circuit: uses a single IC (and it's a common one, too -the 74AC240) to give you motor drive in a
single direction
(added 6/06) |
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SPC2 612 Volt Solar Power Center: (circuit / design added 8/03) |
