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Custom Bridge Rectifier on a preamp power supply

I need an advise from any memebers with experiences in custom bridge rectifier. I am thinking about building my own bridge rectifier. Can i mix two different diode ( 1 pair of Fred and 1 pair of Schottky)?? From my expereinces A Fred diode gives me more of a relax sounding( laid back, imaging are much laid back) and a Schottky diode ( dynamic, was more of in your face sounding) too much of forward sounding. To compomise, is it possible mixing two pair of diode together? Any advise are much appreciated!
zipost
atmasphere's avatar
atmasphere
7,068 posts
 
Actually I mentioned why that is in my first post on this thread.
rodman99999
3,557 posts
 
There are various types of Schottky(as well as FRED) diodes. ie: Just within those Schottky diodes manufactured with Silicon(as a semiconductor); a variety of barrier heights are available, that result in differing Current to Forward Voltage curves. Some(like ZBD Schottky diodes) are manufactured with Gallium Arsenide. Like the various capacitor and resistor types; each may result in a different presentation, depending on the rest of the circuit. How many different Schottky designs have you tried?
rodman99999
3,557 posts
 
There are various types of Schottky(as well as FRED) diodes. ie: Just within those Schottky diodes manufactured with Silicon(as a semiconductor); a variety of barrier heights
are available, that result in differing Current to Forward Voltage curves. Some are manufactured with Gallium Arsenide, as a semiconductor. Like the various capacitor and resistor compositions and types; each may result in a different presentation, depending on the rest of the circuit. How many different Schottky designs have you tried?
ait
480 posts
 
Use a choke input supply instead of cap input and eliminate the huge current peaks that occur in cap input supplies. The input choke very effectively smooths the current draw from the rectifiers. That plus Schottky diodes (amps) or tube diodes (preamps) works best for me.

I also place a 0.022uF + 330R snubber across the +/- between the transformer and rectifier to eliminate any ringing triggered by the switching.
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