Electronics Forum / Components / April 2008

I'm looking for some other choices in the 800-1200V MOSFET with a fast
antiparallel diode (trr less than 300nS)
The application is a 150Khz full bridge SMPS running off 300 - 600VDC at
~150Watts.

Can anyone ID the value of a capacitor with the following markings.  
It looks like a ceramic.
  GAP KAP
  1-2KV

HAVE 1965 VINTAGE TUBED DRAKE SHORTWAVE RADIO. IT HAS A HUM ON
LISTENING.THE HUM IS CONSTANT,AND THE SAME  ON ANY BAND.CAN SOMEBODY
GIVE ME A FIX PLEASE. THANX BOB

Does anyone know where we can get some MHW593 or CA2812 amplifier
modules?  We're looking for small quantities (1-2).
Thanks,
Steve

CCI engineers and manufactures power distribution Bus Bars and Board
Stiffener products. Our bus bars are custom designed and engineered to
accommodate specific needs. Engineers will work with customers to
provide a product suitable for their requirements. Standard board

Does there exist a DIP8 single opamp (TL071/NE5534 pattern) capable of
driving a 50 ohm load while still being usable on +/- 15 volt rails
(cuts out video opamps). Trying to beef up the headphone drive of an
old Neve mixer without hacking it in any way (ie adding in current

Firstly is "fast recovery" diode = = "high speed" diode?
I have 2 ok diodes of originally 3 on a board, one missing. 1N4148 in size
and form but known to be fast recovery types.
Is there a non-destructive test I could say graph-out sub 10mA and sub 20V

I have a nice Radio Shack 2 Line cordless phone that went poof on me,
and let out the magic smoke. I opened it up and found some damage around
the battery and power area. One of the damaged components is a zener
marked D503 on the board. It has a number 6 and the next line is ...

Followup to the message I posted the other week about Nokia 2260 LCDs
for my Babylonian clock... the electronics are now working.
The clock starts at 10:12:10 and ends at 10:13:08 in this video; you
get to see most of the digits.

any one help me that darlinton pair has  either amplifier  or stages
of it

I have a few tubes of NOS Z8 micros (40 pin DIP) which are mask ROM types
containing a Tiny Basic. You can just hook them up to a terminal and code
directly. Alternatively you can add external ROM and RAM for bigger
programmes.

Hi, I am Paolo from Italy.
I received in gift an old HP Oscilloscope, the 1710B, to which they were
removed some transistors from horizontal (?) deflection output board.
Someone has the cross reference to replace the transistor originally

Is there some compatible transistor that I can use to replace 2N1711 ...
2N1711 I can't find, so...

I saw this neat little circuit on a hobby website that uses this chip.
It is a melody synthesizer that has about 10 Christmas tunes on it. I
would like to get about 5 of those UM3481 chips for projects like that.
I have checked the usual sources, Digikey, Newark, Maplin, BGMicro, ...

I have a component I am trying to identify.  It consists of a glass
tube about 3/4" long and 1/8" diameter.  Inside this tube are 2 blades
that look like the might contact each other where they overlap
slightly.  There is a wire coming in from either end into the glass