Discussion:
FA: Motorola MDA1591-3 Solid-State Bridge Rectifiers octal tube base (20 N.O.S.)
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p***@usa.net
2006-08-02 18:52:33 UTC
Permalink
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FA: 20 Motorola MDA1591-3 solid state rectifiers (plus 2 MDA1591-2
rectifiers as a bonus).

See auction listing for photo & diagram
http://search.ebay.com/_W0QQfgtpZ1QQfrppZ25QQsassZrellimde

I was told the MDA1591-3 is rated at 200V 4 amps with a 100uS recovery
time.

New old stock (from about 1969-1972) solid state replacements for
tube-type rectifiers used in guitar amplifiers, tube audio amps,
shortwave radios, ham radios, etc.

Non-US buyers must pay by PayPal and include additional amont for
postage.

NOTE: I don't have the data sheet for this, but I did verify the
diagram. If you happen to have an old Motorola Master Index or Master
Selction Guide that has the data for this, I would appreciate a scan or

a link. Any data is helpful.

Please e-mail with any questions. Thanks very much!

other keywords: octal base diode Moto n.o.s. solid-state
p***@usa.net
2006-08-07 22:09:18 UTC
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These have been relisted for half off.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190017902392
Post by p***@usa.net
FA: 20 Motorola MDA1591-3 solid state rectifiers (plus 2 MDA1591-2
rectifiers as a bonus).
See auction listing for photo & diagram
I was told the MDA1591-3 is rated at 200V 4 amps with a 100uS recovery
time.
New old stock (from about 1969-1972) solid state replacements for
tube-type rectifiers used in guitar amplifiers, tube audio amps,
shortwave radios, ham radios, etc.
Non-US buyers must pay by PayPal and include additional amont for
postage.
NOTE: I don't have the data sheet for this, but I did verify the
diagram. If you happen to have an old Motorola Master Index or Master
Selction Guide that has the data for this, I would appreciate a scan or
a link. Any data is helpful.
Please e-mail with any questions. Thanks very much!
other keywords: octal base diode Moto n.o.s. solid-state
Jim
2006-08-07 22:25:26 UTC
Permalink
Did you warn buyers about increased B+, need to rebias, and possible
over voltage on electrolytics?
Post by p***@usa.net
x-no-archive: yes
These have been relisted for half off.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190017902392
Post by p***@usa.net
FA: 20 Motorola MDA1591-3 solid state rectifiers (plus 2 MDA1591-2
rectifiers as a bonus).
See auction listing for photo & diagram
I was told the MDA1591-3 is rated at 200V 4 amps with a 100uS recovery
time.
New old stock (from about 1969-1972) solid state replacements for
tube-type rectifiers used in guitar amplifiers, tube audio amps,
shortwave radios, ham radios, etc.
Non-US buyers must pay by PayPal and include additional amont for
postage.
NOTE: I don't have the data sheet for this, but I did verify the
diagram. If you happen to have an old Motorola Master Index or Master
Selction Guide that has the data for this, I would appreciate a scan or
a link. Any data is helpful.
Please e-mail with any questions. Thanks very much!
other keywords: octal base diode Moto n.o.s. solid-state
Phil S.
2006-08-09 13:00:07 UTC
Permalink
Did you warn buyers about increased B+, need to rebias, and possible over
voltage on electrolytics?
Jim, I think these things on going to blow on most amps we know. They are
rated at 200V. Even the FrankenVox thing I just built has B+ in the upper
200's. These are probably useless for our crowd. Nifty lookin', though.
Post by p***@usa.net
x-no-archive: yes
These have been relisted for half off.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190017902392
Post by p***@usa.net
FA: 20 Motorola MDA1591-3 solid state rectifiers (plus 2 MDA1591-2
rectifiers as a bonus).
See auction listing for photo & diagram
I was told the MDA1591-3 is rated at 200V 4 amps with a 100uS recovery
time.
New old stock (from about 1969-1972) solid state replacements for
tube-type rectifiers used in guitar amplifiers, tube audio amps,
shortwave radios, ham radios, etc.
Non-US buyers must pay by PayPal and include additional amont for
postage.
NOTE: I don't have the data sheet for this, but I did verify the
diagram. If you happen to have an old Motorola Master Index or Master
Selction Guide that has the data for this, I would appreciate a scan or
a link. Any data is helpful.
Please e-mail with any questions. Thanks very much!
other keywords: octal base diode Moto n.o.s. solid-state
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