My CTC-16XL Project.

[Yamamaya42]

I still can't decide which amp to go with, on the one side, the simple 2 transistor amp is cheap and easy, and SAYS it will boost to 3v ptp, but I'm a little worried that it also shows the output being at 4v dc, where the g1 voltage of the 1st video amp is 0v, I don't know if this will matter to the TV or not.
On the other hand, the lm359 , much more costly and complex,will take a bit to work out the programmable gain to get 3.5 v ptp out of it.

T_T
choices... choices...

[Electronic M]

Originally Posted by Yamamaya42

I still can't decide which amp to go with, on the one side, the simple 2 transistor amp is cheap and easy, and SAYS it will boost to 3v ptp, but I'm a little worried that it also shows the output being at 4v dc, where the g1 voltage of the 1st video amp is 0v, I don't know if this will matter to the TV or not.
On the other hand, the lm359 , much more costly and complex,will take a bit to work out the programmable gain to get 3.5 v ptp out of it.

T_T
choices... choices...

Why not just use a .1uF cap to couple the transistor amp output to the grid?..It will block DC from changing grid bias, should couple the video just fine and RCA colors all had some form of DC restoration that negates and need for DC video coupling in the early stages of the video chain.