RetiredHAL
New Member
Hi, what would be an allowable error margin for a Xtal Oscillator. I took one out of an old Battery wall clock and tried to feed it into a 4060 chip to see if I could get a 2Hz "tick".
To my surprise it was way off, Yet gave good time, when it ran. The mechanism was the Xtal ,some very small electricals under a Glob of pink and a 2cm coil with an "armature" to drive the analogue movement. I could not find any trimming capacitors to tune the movement.
My question is this? Is the armature acting as a "slug" to tune it?
My second question? What accuracy can I expect if I buy a 32768 Xtal?
Cheers RetiredHAL
To my surprise it was way off, Yet gave good time, when it ran. The mechanism was the Xtal ,some very small electricals under a Glob of pink and a 2cm coil with an "armature" to drive the analogue movement. I could not find any trimming capacitors to tune the movement.
My question is this? Is the armature acting as a "slug" to tune it?
My second question? What accuracy can I expect if I buy a 32768 Xtal?
Cheers RetiredHAL