timrobbins
- Joined Aug 29, 2009
- 318
Marshall - he doesn't have fets or opamps. For whatever reason he only has those part groups - and even then I doubt he has much variety per se - so it is all a bit hypothetical I suggest anyway.
If your panel's Isc is less than the float current, and the averaged self-discharge current then connecting a low powered PV panel without a controller is somewhat ok. However, without doing the sizing assessment, it is easy to cook an expensive battery due to overvoltage.
There are a huge number of simple opamp based controllers around to utilise without us dreaming up yet another example. The simplest use a series FET with the battery, to effectively pwm the battery voltage to be acceptable (assisted by the time response of the battery voltage).
Ciao, Tim
If your panel's Isc is less than the float current, and the averaged self-discharge current then connecting a low powered PV panel without a controller is somewhat ok. However, without doing the sizing assessment, it is easy to cook an expensive battery due to overvoltage.
There are a huge number of simple opamp based controllers around to utilise without us dreaming up yet another example. The simplest use a series FET with the battery, to effectively pwm the battery voltage to be acceptable (assisted by the time response of the battery voltage).
Ciao, Tim