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98 August 2006
I have a 1989 Lincoln Town Car.
I cannot play the AM radio due to
excessive ignition noise. Any good
suggestions for quelling this noise?
#8061 Vincent Sariti
are no longer in print. Do you
know of a website database for this
I have a Stanley remote controlled garage door opener model
ST 500 that no longer responds to
remote signals (two remotes). The
batteries in the remotes have been
replaced and code switches are set
correctly. I have checked and reset
the code switches on the receiver
twice — no help. The opener works
fine with the push button. Does
anyone have a schematic of the
radio signal receiver section (or
I want to build a 24 VDC power
supply using the LM723 voltage
regulator, at around 20-30 amps.
I can custom wind a large
transformer for this project, but I
need a schematic for the voltage
regulation section. I would also
like to know if I could use a
power MOSFETs instead of a
bipolar transistor like the 2N3055. I
believe that using a MOSFET with a
low on resistance should lower the
heat generated. Does anyone have
an idea or schematics to do this?
#8064 Tim Henley
I have the sixteenth edition of
Transistor Substitution Handbook,
published by Howard Sam's
Company in 1976. Over the years,
this has been an invaluable aid
when I wanted to sub a transistor
using one from stock rather than
racing to buy the expensive NTE
It appears that books like this
[#6064 - June 2006]
I recently got hold of some junk
laptops and was hoping to use the LCD
monitors for other applications.
#1 Laptop LCDs are generally the
least convenient kind to use. First, I'll
suggest the easiest way I know of to
use them. Assuming the laptop is "too