- Joined
- Dec 29, 2012
- Messages
- 394
After experimenting with a Basic Battery Capacitance Charger (BBCC) I decided to build a better one with more capabilities and options.
Some changes to basic schematic were necessary.
As you can see above, 3 capacitors of values 6, 16 and 20 uF are used in order to have a range of output power.
SW1 SW2 SW3 AMPS
ON OFF OFF 0.2
OFF ON OFF 0.5
ON ON OFF 0.7
OFF OFF ON 1
ON OFF ON 1.2
OFF ON ON 1.5
ON ON ON 2
I have a range of capacitors and high voltage rectifier bridges (removed from computer PSUs)
A dead computer PSU could provide the enclosure for the parts
Guts removed and parts fit nicely inside
Original SPST Switch changed for a DPST so when is OFF both lines (L & N) will be cut off)
I made a rectangle hole for a Voltmeter – Ammeter
This AMMETER can measure up to 300V and 10A, but needs to be powered from 7 to 30 volts DC. So a small transformer 230 to 7,5v AC from an old cell phone PSU had to be modified adding a rectifier and a filter capacitor to provide 12,3V for the AMMETER.
It fits in the box nicely
A metal panel had to be prepared for the 3 rocker switches.
A paper pattern and a few dremel cutting disks later it was ready.
A label will make the box look nicer. It is a printout on special inkjet paper with two coats of clear varnish on top.
And the box is ready
Unfortunately the VOLT-AMMETER I have measures up to 100V so I have to wait for the new one (from ebay) to have the unit fully functional.
Until then I use my multimeter to read the battery voltage.
Thanks for reading
Petros
Some changes to basic schematic were necessary.
As you can see above, 3 capacitors of values 6, 16 and 20 uF are used in order to have a range of output power.
SW1 SW2 SW3 AMPS
ON OFF OFF 0.2
OFF ON OFF 0.5
ON ON OFF 0.7
OFF OFF ON 1
ON OFF ON 1.2
OFF ON ON 1.5
ON ON ON 2
I have a range of capacitors and high voltage rectifier bridges (removed from computer PSUs)
A dead computer PSU could provide the enclosure for the parts
Guts removed and parts fit nicely inside
Original SPST Switch changed for a DPST so when is OFF both lines (L & N) will be cut off)
I made a rectangle hole for a Voltmeter – Ammeter
This AMMETER can measure up to 300V and 10A, but needs to be powered from 7 to 30 volts DC. So a small transformer 230 to 7,5v AC from an old cell phone PSU had to be modified adding a rectifier and a filter capacitor to provide 12,3V for the AMMETER.
It fits in the box nicely
A metal panel had to be prepared for the 3 rocker switches.
A paper pattern and a few dremel cutting disks later it was ready.
A label will make the box look nicer. It is a printout on special inkjet paper with two coats of clear varnish on top.
And the box is ready
Unfortunately the VOLT-AMMETER I have measures up to 100V so I have to wait for the new one (from ebay) to have the unit fully functional.
Until then I use my multimeter to read the battery voltage.
Thanks for reading
Petros