[WriteLog] 4n33 pinouts and suggestions
Wed, 19 Apr 2000 22:09:31 EDT
Thanks to all, and thanks to firstname.lastname@example.org for suggesting I share
all responses. Here they are, edited with the technical portions as provided
Hope it helps someone.
Here is the pinout for the 4N33:
3- No Connection
This pinout is typical of most optoisolators in
the 6- pin package...
also, check the Toshiba website
http://doc.semicon.toshiba.co.jp/seek/us/td/14hikari/140024.htm for full
via Ron K5dj
try http://www.ping.be/on4aoi/keyer shtml or http://www.qsl.net/kobx
The ON4AOI site is highly recommended, a 7 page printable circuit diagram for
several configurations, plus a commercial interface option as well.
From: email@example.com (Jim Sheldon)
Additional info on typical series resistors needed;
1 anode of photo diode (input +)(use 560 ohm resistor from DTR or RTS
2 cathode of photo diode (input -)(Computer side ground)
3 no connection
4 emitter of phototransistor (rig side ground)
5 collector of phototransistor (to PTT)
6 base of phototransistor - may be left floating for this application
From: firstname.lastname@example.org (k7wm)
Howdy. This straight from RS...1-anode, 2-cathode, 3-nc, 4-emitter,
5-collector, 6-base. Check out Joe's, K0BX, web-site at
http://www.qsl.net/kobx/cwkeying.htm. he has a lot of good stuff on the
building of these little bothersome circuits.
Couldn't get to K0BX's website late at night, perhaps pilot error, give it a
Again Many Thanks to all, Wayne and Ron, perhaps, a slight revision to the
manual would help future writelog users looking formore details.
Best 73's to all,
Administrative requests: writelog-REQUEST@contesting.com