426A flashing inside a WE 501 phone
By Jorge Amely, ; posted February 23, 2008; hits 2726
 |
| I wired the 426A tube that came with a 501 phone and got it to drive the ringer. Cool! |
By Jorge Amely, ; posted February 23, 2008; hits 2726
|
| I wired the 426A tube that came with a 501 phone and got it to drive the ringer. Cool! |