Solar Charge Controller With Dump Load Circuit Built By Matt Smyrski.

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Presentation transcript:

Solar Charge Controller With Dump Load Circuit Built By Matt Smyrski

Description

Specifications Solar Charging Current: 0 to 20 Amps continuous. Nominal Battery Voltage: 12V. Recommended Battery Capacity: 0.5 to 400 Amp Hours. Photovoltaic Panel Voltage Ratings: 12V - 23V, (ex: cells). Maximum PV input voltage: 25VDC PV Panel Power Rating: 1W to 240W (90ma - 20A). Voltage Drop During Charging: 10A, 20A. Float Voltage Adjustment Range: 13V-15V (range can be altered using pot). Night Time Battery Current Drain: ma. Fuse Rating: 20 Amp standard ATO automotive fuse. Fits into a standard 4" X 4" electrical utility box, can be mounted on the cover plate.

Circuit Schematic

Breadboard Built

LEDs The green and red LEDs are used for the float voltage.  Find in battery specs  Optima – 13.8 Volts, 1 Amp max  Adjust using the potentiometer  When the battery is low the LED will be red  At the float voltage the LEDs will alternate

Dump Control +Solar Panel External Load Pin 2 of IC2a

Dump Circuit Connect:  Electric Heater  Water Heater  Lighting Circuit  Water Pump  Anything With A Fairly Large Resistance

Batteries Connect any size 12Volt battery to charge: 18Ah55Ah

Batteries Cont. → Batteries can also be connected in parallel for more amperage and longer life when powering various appliances. → Will take longer to charge.

How Does This Circuit Help? ‼ The rising cost of living. Become independent from the power companies.