Motorola roundie

[timmy]

I just checked the 2 330pf micas one is 340 and the other is 350 pf I don’t know if this is considered to be to far out.

[Yamamaya42]

Originally Posted by timmy

I just checked the 2 330pf micas one is 340 and the other is 350 pf I don’t know if this is considered to be to far out.

These form a phase locked loop circuit, which control the color oscillator, the more matched you can get the parts, the more stable it will be, thus the point of having the resistors being a matched pair and very close tol on both caps and resistors.

[timmy]

Originally Posted by Yamamaya42

These form a phase locked loop circuit, which control the color oscillator, the more matched you can get the parts, the more stable it will be, thus the point of having the resistors being a matched pair and very close tol on both caps and resistors.

Does these micas sound like they are out to far to be any good being micas are for a stable exact circuit.

[Yamamaya42]

Originally Posted by timmy

Does these micas sound like they are out to far to be any good being micas are for a stable exact circuit.

unknown, it very well could be, but without being able to see the signal out of the detector, as shown on pins 1 and 2 on the SAMS at v22, there is no way to know, if things a wrong, the beat pattern will be messed up, uneven, missing, and so on, this will throw the color osc out of sync.

[old_tv_nut]

Originally Posted by timmy

I just checked the 2 330pf micas one is 340 and the other is 350 pf I don’t know if this is considered to be to far out.

Per SAMS, these are 5% parts. This tolerance is specified mainly for the match rather than the absolute value. So 340 and 350 is more than close enough to work as intended.