chemelec
Well-Known Member
I have some older watch crystals that I removed from old digital watches.
I made some oscillator circuits for them.
One circuit using a 4069, and some with transistors and also fets circuits.
All circuits Work Perfectly.
However, I also have some NEWER, Physically Smaller crystals but the SAME Frequency.
These are made by "Seiko", They are New parts on taped reels.
But NONE of these will work in any of these same circuits.
And I have tried all modifications/part value changes I can think of.
Anyone have any ideas as to why?
Or a Circuit that I might try?
I made some oscillator circuits for them.
One circuit using a 4069, and some with transistors and also fets circuits.
All circuits Work Perfectly.
However, I also have some NEWER, Physically Smaller crystals but the SAME Frequency.
These are made by "Seiko", They are New parts on taped reels.
But NONE of these will work in any of these same circuits.
And I have tried all modifications/part value changes I can think of.
Anyone have any ideas as to why?
Or a Circuit that I might try?