nothing free there
Hi Phat,
That is called polarization of the dielectric. When you charge the caps you use a little bit more energy than you get out at the first discharge. This extra energy polarizes the dielectric, which remains polarized for a while even after discharging the cap.
The polarized dielectric recharges the cap.
I have a 5600 Volt DC power supply, with bridge rectifier and 29 uF smoothing caps.
(no bleeder resistor)
After using this power supply I have to discharge the caps 4-5 times.
interesting and dangerous
Ernst.
Hi Phat,
That is called polarization of the dielectric. When you charge the caps you use a little bit more energy than you get out at the first discharge. This extra energy polarizes the dielectric, which remains polarized for a while even after discharging the cap.
The polarized dielectric recharges the cap.
I have a 5600 Volt DC power supply, with bridge rectifier and 29 uF smoothing caps.
(no bleeder resistor)
After using this power supply I have to discharge the caps 4-5 times.
interesting and dangerous

Ernst.
Comment