aljamri
Member
Has problem to check my crystals, search for a simple circuit to use, I found the a circuit from:
**broken link removed**
I used 2N3904 instead of the proposed 2N3563 transistor, as per the designer recommendations. After constructing the circuit using bread board, the LED is always ON even when the crystal is not connected.
any idea for the reasons ?
**broken link removed**
I used 2N3904 instead of the proposed 2N3563 transistor, as per the designer recommendations. After constructing the circuit using bread board, the LED is always ON even when the crystal is not connected.
any idea for the reasons ?