I am trying to get a 4060 crystal oscillator circuit to work but it is having some strange behavior. In particular, the circuit will not oscillate unless I touch the bias resistor's lead. What is going on???
Here is the crystal I used: http://www.mouser.com/Search/ProductDetail.aspx?R=AB26T-32.768KHZvirtualkey52750000virtualkey815-AB26T-32.768KHZ
Attached is the circuit I used, a photo of the breadboard layout, and also a picture of the scope when I am touching the circuit making it work. The frequency of the oscillation actually varies based on the amount of pressure I am applying.
Here is the crystal I used: http://www.mouser.com/Search/ProductDetail.aspx?R=AB26T-32.768KHZvirtualkey52750000virtualkey815-AB26T-32.768KHZ
Attached is the circuit I used, a photo of the breadboard layout, and also a picture of the scope when I am touching the circuit making it work. The frequency of the oscillation actually varies based on the amount of pressure I am applying.
Attachments
-
118.9 KB Views: 110
-
36.1 KB Views: 194
-
130.4 KB Views: 96