Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 51,575
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
</font><font color="blue" class="small">( 3 "units" in would either be 1.5v@360ma or 4.5v@120ma depending if you hooked them in parallel or serial (respectively).
)</font>
For you non electric types out there.. i hope you know that you should be listing those numbers like the 1.5 / 3 as w for watts.. not v for volts. Also.. these are designed as 12v units.. Not sure why you would want to be hooking in series unless you have a 24v project.
in any case.. watts are power.. power is a function of voltage and current.. expressed as
P=EI
If either E ( voltage) or I ( current goes up.. then P ( power / watts goes up.. )
Therefore 3 solar units parallelled would still be 12v charging (loaded ) and 360ma and (4.32) 4.5w if you trust those numbers... I seem to calculate more like 1.44 w.. not 1.5... anyway..
If you connected 2 units in series you would get 24v charge.. and assuming the 120ma.. you'd get 2.88w power.. etc..
Also realize that '12v' is a designator for system votlage nominal.. Unloaded these units put out higher voltage.. and realistically to charge.. must be at a higher potential than the battery for current to flow.. etc..
Soundguy
)</font>
For you non electric types out there.. i hope you know that you should be listing those numbers like the 1.5 / 3 as w for watts.. not v for volts. Also.. these are designed as 12v units.. Not sure why you would want to be hooking in series unless you have a 24v project.
in any case.. watts are power.. power is a function of voltage and current.. expressed as
P=EI
If either E ( voltage) or I ( current goes up.. then P ( power / watts goes up.. )
Therefore 3 solar units parallelled would still be 12v charging (loaded ) and 360ma and (4.32) 4.5w if you trust those numbers... I seem to calculate more like 1.44 w.. not 1.5... anyway..
If you connected 2 units in series you would get 24v charge.. and assuming the 120ma.. you'd get 2.88w power.. etc..
Also realize that '12v' is a designator for system votlage nominal.. Unloaded these units put out higher voltage.. and realistically to charge.. must be at a higher potential than the battery for current to flow.. etc..
Soundguy
