Home |
Search |
Today's Posts |
#21
![]() |
|||
|
|||
![]()
True, if you expect the transistors to never be replaced. But that's
not the reality with CB amps. The owners like to swap transistors for more power. Either that, or they overdrive the transistors and blow them up. Replacing them tears up the board, which is why it's hard to find an old single-board amp with good traces. Point-to-point wiring eliminates this problem because both the transistors -and- the strips can be replaced. The servicable life of the amp is almost indefinite irrespective of the amount of work done to it. Transistors in amps normally have to be replaced because the amp has matching problems or inadequate cooling... or both. Almost all the bootleg amps I've worked with suffered from these problems. This causes the transistors to run red hot... and it cuts their life drastically. As for your statement about using point to point wiring... bad idea. This causes stray inductances and capacitances all over the place that cause RF oscillations. Oscillations contribute to failed power transistors, due to the tremendous power dissipation that is present during these oscillations. Many times these oscillations can't be heard on the air and do their damage without the operator ever knowing why the failure occured. http://www.telstar-electronics.com/S...202879ABTC.pdf |
Thread Tools | Search this Thread |
Display Modes | |
|
|