Another opto-isolator that works really well is the Motorola MOC8111. It's available from MCM electronics for 69 cents apiece. Same pinouts and specs as the 4N32/4N33 Jim, W0EB ----- Original Message ----- From: "Ron Stailey" <k5dj@contesting.com> To: <ak0a@sound.net>; <writelog@contesting.com> Sent: Wednesday, March 15, 2000 6:28 PM Subject: [WriteLog] 4N33/4N32 info >> Hi Bill, got to radio shack and get 4N32 they are the same as 4N33. The > 4N33's are very hard to find I never found one. But the 4N32s work real > well. Cost is about 1ドル.25 each the last time I got any.. >> 73, de Ron K5DJ >>> -- > WWW: http://www.contesting.com/writelog > Submissions: writelog@contesting.com > Administrative requests: writelog-REQUEST@contesting.com > Problems: owner-writelog@contesting.com > -- WWW: http://www.contesting.com/writelog Submissions: writelog@contesting.com Administrative requests: writelog-REQUEST@contesting.com Problems: owner-writelog@contesting.com -- WWW: http://www.contesting.com/writelog Submissions: writelog@contesting.com Administrative requests: writelog-REQUEST@contesting.com Problems: owner-writelog@contesting.com