What's better spec first the ripple or the esr?
Ripple for the input cap, and esr for the other caps.
Good caps are a little bit expensive:
ALS40A221DE450 | Condensador electrolitico de aluminio KEMET ALS40A221DE450, 220μF, +-20%, 450V dc, Montaje en Panel, 487mΩ | KEMET
PEH200YC3220MU2 | Condensador electrolitico de aluminio KEMET PEH200YC3220MU2, 220μF, +-20%, 450V dc, Montaje en Panel, 240mΩ | KEMET
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PSU question
I don't know what to do to improve better the PSU, input choke or a high ripple low impedance capacitor?
PEH200YC3220MU2 | Condensador electrolitico de aluminio KEMET PEH200YC3220MU2, 220μF, +-20%, 450V dc, Montaje en Panel, 240mΩ | KEMET
ALS40A221DE450 | Condensador electrolitico de aluminio KEMET ALS40A221DE450, 220μF, +-20%, 450V dc, Montaje en Panel, 487mΩ | KEMET
The hammond choke cost 20-21€00 and the capacitor 20-32€00.
Wich one will be more effective and with the best SQ?
I don't know what to do to improve better the PSU, input choke or a high ripple low impedance capacitor?
PEH200YC3220MU2 | Condensador electrolitico de aluminio KEMET PEH200YC3220MU2, 220μF, +-20%, 450V dc, Montaje en Panel, 240mΩ | KEMET
ALS40A221DE450 | Condensador electrolitico de aluminio KEMET ALS40A221DE450, 220μF, +-20%, 450V dc, Montaje en Panel, 487mΩ | KEMET
The hammond choke cost 20-21€00 and the capacitor 20-32€00.
Wich one will be more effective and with the best SQ?
I'm designing two PSU only for B+, requirements are:
One PSU 170VDC drawing 142mA
Other PSU 60VDC drawing 7mA
I'm thinking LCRC or CRCRC both possibilites, Power tx on hand 150VDC 30VA 200mA & 230VDC 120VA 500mA. If necessary I will order new one.
Rectifiers bridge 4 Sic Cree C3D02060F 4A 600V on each PSU
One PSU 170VDC drawing 142mA
Other PSU 60VDC drawing 7mA
I'm thinking LCRC or CRCRC both possibilites, Power tx on hand 150VDC 30VA 200mA & 230VDC 120VA 500mA. If necessary I will order new one.
Rectifiers bridge 4 Sic Cree C3D02060F 4A 600V on each PSU
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Generalizations:
Choke input has output voltage of 0.9 times the primary winding rms.
Cap input has output voltage of 1.414 times the primary winding rms.
(winding = whole for bridge rectifier, winding = 1/2 for center tapped full wave rectifier).
Chokes are expensive, take real estate, and spray magnetic fields.
Choke input has stable output voltage versus load.
Choke input makes the power transformer run cooler.
Capacitors are less expensive, take less real estate, but they do cause (voltage) ground loops and spray magnetic fields according to the aperture of the loop.
Cap input has less stable output voltage versus load.
Cap input makes the power transformer run hotter.
All generalizations have exceptions.
Choke input has output voltage of 0.9 times the primary winding rms.
Cap input has output voltage of 1.414 times the primary winding rms.
(winding = whole for bridge rectifier, winding = 1/2 for center tapped full wave rectifier).
Chokes are expensive, take real estate, and spray magnetic fields.
Choke input has stable output voltage versus load.
Choke input makes the power transformer run cooler.
Capacitors are less expensive, take less real estate, but they do cause (voltage) ground loops and spray magnetic fields according to the aperture of the loop.
Cap input has less stable output voltage versus load.
Cap input makes the power transformer run hotter.
All generalizations have exceptions.
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