rin67630
Solar Enthusiast
Who is tinkering with solar energy frequently needs an adjustable load in order to discharge batteries, put a load on SCCs or BMS, test shunts etc...
With a cheap 600W Step up converter and a 1000W 240V bulb from an old cinema flooder, you can make an adjustable load:
Just wire the output of the step up converter to the 1000W lamp. The input of the buck converter is then your electronic load.
You can e.g.
- by a system voltage of 12 volt continuously adjust the load from ~10W to ~150W, upon changing output voltage
- by a system voltage of 24 volt continuously adjust the load from ~40W to ~150W
If you replace the 1000W bulb by a 100W halogen bulb you will be able to continuously adjust the load from ~1W to 15W, respectively 4W to 15W.
The best is that the output power is independent of the input voltage, so you can exactly dissipate a fixed energy by hour...
Enjoy!
P.S: If you have a 110V bulbs, you can even put almost 4x the max load...
But I live in Europe, so I won't find this kind of bulbs here.
With a cheap 600W Step up converter and a 1000W 240V bulb from an old cinema flooder, you can make an adjustable load:
Just wire the output of the step up converter to the 1000W lamp. The input of the buck converter is then your electronic load.
You can e.g.
- by a system voltage of 12 volt continuously adjust the load from ~10W to ~150W, upon changing output voltage
- by a system voltage of 24 volt continuously adjust the load from ~40W to ~150W
If you replace the 1000W bulb by a 100W halogen bulb you will be able to continuously adjust the load from ~1W to 15W, respectively 4W to 15W.
The best is that the output power is independent of the input voltage, so you can exactly dissipate a fixed energy by hour...
Enjoy!
P.S: If you have a 110V bulbs, you can even put almost 4x the max load...
But I live in Europe, so I won't find this kind of bulbs here.