That GE-813 is an oddball for sure. Absolutely no sign of
it anywhere I've looked so far. That includes Google, my 1962
GE Transistor Manual, and the Radio Shack semiconductor
cross-reference
guide. Nothing even close such as 2N813 nor anything like that.
Yes, in those days there were a LOT of
This sounds somewhat similar to the now very old, and obsolete clocks used
in automobiles around sixty years ago. They worked like this. A spring
would drive the clock through an escapement. As the spring unwound, two
contacts would make, and a small electromagnet would wind the spring
I once had a clock which I found when someone was throwing it away.
It ran on a set of (2) D cells in series. It was a springwound
clock, it would run for about ten minutes per winding. When spring
tension got low, a little motor would kick in and wind it back up.
A set of batteries would last
https://lh3.googleusercontent.com/-1L_yrXPUFdg/VUArcv2pndI/AHo/sZE-zJLuKCY/s1600/IMG_0549.JPG
https://lh3.googleusercontent.com/-bqaIGccREl8/VUArXh9BmfI/AHg/swIxtAFf9f0/s1600/IMG_0549.JPG
There was also some discussion about the old car radios that used a coil to
'autowind' the
I just finished lunch and my research has not yielded too much so far.
I've looked through several GE semiconductor catalogs,,nothing.
Loose leaf literature in file cabinets full of such stuff,nothing.
Finally I turned to Newark, Allied, Lafayette, Mouser parts catalogs,
and in the
There was also some discussion about the old car radios that used a coil to
'autowind' the clock every few minuets. The escapement would advance a cam
and eventually allow a set of points to make contact, energizing a solenoid
which would rewind the drive spring and open the points. Worked
https://lh3.googleusercontent.com/-Fe9_92a95Ek/VUAcbnr4EcI/AGs/7XDnBx9p-lM/s1600/IMG_0546.JPG
https://lh3.googleusercontent.com/--7hHPog-r0E/VUAchK0r7_I/AG0/RrP58yD7kYk/s1600/IMG_0545.JPG
https://lh3.googleusercontent.com/-MSzsYSIQ8Tw/VUAr2aGWnPI/AH4/Vh-VsFGjyjQ/s1600/IMG_0548.JPG
https://lh3.googleusercontent.com/-79adErQd-o4/VUArvXuk-9I/AHw/fCH1AeNtsik/s1600/IMG_0549.JPG
There was also some discussion about the old car radios that used a coil to
'autowind' the
Whoa! That looks a lot like the clock mechanism I was talking about, though
it's been 35 years since I messed with it. I recall it ran on a single
C-size battery. Also, to start the clock you had to pull-and-release the
knob used to set the time. It gave the escapement a small kick.
Working on an old Zenith battery operated clock radio (60's) The radio I
fixed..the clock..not so much. It's a simple thing, just a transistor, center
tapped coil and a cap. I need to try the transistor It's marked GE-813 and I
can't find it listed anywhere. I THINK it's a germanium PNP but
I will see if it's in the old GE transistor book I have, when I get home.
On 4/28/2015 1:47 PM, John Rehwinkel wrote:
Working on an old Zenith battery operated clock radio (60's) The radio I
fixed..the clock..not so much. It's a simple thing, just a transistor, center
tapped coil and a cap. I
Getting back to the original enquiry, my guess is that the
characteristics are not too critical.
sounds from the original description that the transistor is being used
as an on -off switch, and the voltage is known, the current it must pass
can be measured. The soviets made Germanium
Sooo,,what's wrong with dreaming in technicolor. As soon
as I finish lunch, I'm going to try and find some info on the G.E.-813
transistor. Ira
On 4/28/2015 12:29 PM, Charles MacDonald wrote:
Getting back to the original enquiry, my guess is that the
characteristics are
13 matches
Mail list logo
