Controller Regulator
Controller Regulator
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Solar Panel Charger Regulator Controller 10A/12V/24V Safe Protection CE Certify $0.99 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.01 |
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Solar Panel Charger Controller Regulator 10A 12V/24V $0.90 |
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Solar Panel Charger Regulator Controller 10A/12V/24V Safe Protection CE Certify $0.88 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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Solar Panel Charger Controller Regulator 10A 12V/24V, Auto Swich $0.85 |
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Solar Panel Charger Controller Regulator 10A 12V/24V $0.85 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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20A Solar Charge Controller Panel Regulator 12V 24V $0.95 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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MPPT Solar Panel Controller Charge Regulator 30A 12V $141.99 |
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20A Dual battery solar charge controllers regulator RVs $49.99 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.01 |
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Solar Panel Battery Charger Regulator Controller 12V 5A $9.95 |
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MPPT Solar Panel Controller Charge Regulator 20A 24V $103.79 |
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Solar Panel Charger Controller Regulator 10A 12V/24V $0.85 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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Solar Panel Charger Controller Regulator 10A 12V/24V, Auto Swich $0.85 |
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Solar Panel Charger Regulator Controller 10A/12V/24V Safe Protection CE Certify $0.99 |
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Solar Panel Charger Controller Regulator 10A 12V/24V $0.85 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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20A Solar Charge Controller Panel Regulator 12V 24V $0.95 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.01 |
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Solar Panel Charger Regulator Controller 10A/12V/24V Safe Protection CE Certify $0.88 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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Solar Panel Charger Controller Regulator 10A 12V/24V $0.85 |
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Solar Panel Charger Controller Regulator 12-24V 20A $0.88 |
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Solar Panel Charger Controller Regulator 10A 12V/24V, Auto Swich $0.85 |
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12/24v 200w Solar Panel Charge Regulator Controller NEW $18.39 |
How do I hook up my solar panel to a fountain?
I made a solar panel, it gives out 21 volts in the sun, 16 in cloud cover. I have a 200 watt power inverter and a small fountain that plugs into the power inverter.
What do I need before the panel hooks up to the power inverter, some sort of voltage regulator i assume.. Any specifics? I have a charge controller but that doesnt work without a battery, and I dont want to go and buy a deep cycle batter for the fountain.
I want the fountain to turn on when the sun hits it in the morning, and shut off when the sun sets in the evening.
Any advice greatly appreciated. THANKS
Hey Math, the only way to get your fountain to work directly on your panel is to find a DC pump that runs at a voltage below your panels voltage, but at about the same amperage as your panel. They sell kits that do this in solar catalogs, with a pump and panel already balanced for each other. Since you’ve already built the panel, the challenge will be to find a pump that fits it.
You said your open circuit voltage is about 21, in panel terms, this is referred to as VOC, or volts open circuit. You measure it by putting your panel in the sun and taking a volt reading with nothing else hooked to the panel but your voltmeter. Now you need an ammeter, do the same test with nothing else hooked to the panel, and see how many amps it can put out. Let’s assume for discussion that your panels short circuit current rating is 2.4 amps. If you go to a marine supply website, you can look through the 12 volt bilge pumps and find one that uses about that amount of amps. If you hook it straight to the panel, when the sun is shining on the panel adequately in the morning, the pump will begin to run, slowly at first, then at full speed in the middle third of the day, then slow down in the evening until it stops.
In my experience, a pump used this way is good for about a year, then it wears out, and you have to get another. These are generally inexpensive pumps, a 360 GPH 12 volt bilge pump might cost around $24 if you shop around, but then you don’t need anything else, batteries, controllers, inverters or anything. That size pump uses about 2 amps at full power, 2.5 amps would be just fine. If your panel puts out more than 3 amps, look for a larger pump, they come in lots of sizes.
The problem with the inverter is they need either a battery or the power grid to regulate their output, you can’t hook an inverter straight to your panel, it won’t carry any load, and probably will not even turn on because your panel voltage is too high at 21 volts. Most 12 volt inverters only work between 11 and 15 volts or so, outside of that, they shut down. Once you hook a panel to a battery, it’s voltage drops down to charge voltage to match the battery, so then the inverter has a voltage it can use. So if you don’t want to spring for the battery, then skip the controller and find your panels amp limit, then shop for a cheap DC pump. You can check out a sample package at Real Goods, they have a couple there, and a short discussion on how hooking a cheap pump directly to the panel works. Good luck Math, and take care, Rudydoo
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T-Fal Vitesses 1.7L (7-Cup) Electric Kettle $38.99 1.7L VitesseS Kettle… |
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Johnson Controls A19AAT-2C Freezer Temperature Controller $48.70 Use this handy controller to regulate the temperature in your freezer between 20 – 80F . Great for turning a chest freezer into a keg refrigerator. Strictly a mechanical thermostat for cooling only, it is simple to use and economical. It operates with a gas filled probe on a 6-foot capillary tube. When the gas contracts or expands in the probe, it triggers a mechanical device inside the control wh… |
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Refrigerator or Freezer Thermostat (Temperature Controller) $47.40 With the thermostat control you can turn any freezer or refrigerator into a sophisticated lagering device and more accurately control the temparature of your ales. Simply place the temperature probe into the freezer, plug the thermostat into the outlet and then your freezer into the Contrl. This thermostat has a range from 30 degrees F to 80 degrees F. Plus with the purchase of this thermostat rec… |
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Hydrofarm MTPRTC Digital Thermostat For Heat Mats $29.33 Hydrofarm MTPRTC Electronic Heat Mat Temperature Controller Hydrofarm MTPRTC Electronic Heat Mat Temperature Controller Features: Electronic temperature controller for heat mats Provides constant optimum temperatures for specific crops Controls temperature in colder or warmer environments Compatible with all heat mats Optional for Hydrofarm Seedling Heat Mats Illuminated indicator light Three pron… |
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Temperature controlled FAUCET LIGHT color change NEW A fun new way to liven up your home with color. No more testing the water to see if it is hot. With this faucet fixture a colorful stream of blue water flows and changes to red as the water heats up…. |
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Johnson Controls Digital Thermostat Control Unit $68.00 Convert any freezer into a kegerator! Just plug the freezer into the outlet cord, place the gas-filled sensor in the area to be controlled and program the temperature. This manual thermostat simply turns off the freezer when it reaches the specified temperature. Other features include a lockable touchpad temperature adjustment, a 6-foot power cord and a 6-foot outlet cord…. |
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Wand Massager Speed Controller for Hitachi Wand $14.87 This speed control box allows you to perfectly adjust the speed of the Hitachi magic wand to the level best for you. Previously users were limited to two speeds. Now the possibilities are endless. It even works with other similarly limited plug-in vibrators. If that was not good enough, it also acts as a 6 foot extension cord, so you can dial up the perfect speed farther from the nearest electrica… |
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Planet Waves Humidipak Automatic Humidity Control System (for guitar) $13.65 Planet Waves, in collaboration with Humidipak, brings you the first two-way humidity control that maintains a constant 45% relative humidity level. The patented Planet Waves Humidipak completely eliminates all the guesswork and anxiety of maintaining your instrument’s proper humidity level. No more guessing if or when to refill the humidifier and worrying about drips or mess. Unlike all refillable… |
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Trinity Vibes Wand Massager Speed Controller for Hitachi Wand $29.51 This speed control box allows you to perfectly adjust the speed of the Hitachi magic wand to the level best for you. Previously users were limited to two speeds. Now the possibilities are endless. It even works with other similarly limited plug-in vibrators. If that was not good enough, it also acts as a 6 foot extension cord, so you can dial up the perfect speed farther from the nearest electrica… |
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APC LE1200 Line-R 1200VA Automatic Voltage Regulator $44.00 APC Line-R 1200VA Line Conditioner With AVR LE1200 Line Conditioners… |
