??? 02/28/08 16:07 Modified: 02/28/08 16:14 Read: times |
#151605 - Exactly, but not only... Responding to: ???'s previous message |
The phase condition is one aspect, the other is the drive level!! Without this high resistance the crystal would have a barbecue as for these quartzes the maximum drive level is only 1µW (microWatt)! Standard HC49U crystals resist up to 1mW, which is thousand times more...
A while ago I have tried to explain this subject here: http://www.8052.com/forum/read.phtml?id=79811 Kai |
Topic | Author | Date |
Capacitor for 32.768 crystal | 01/01/70 00:00 | |
Maybe the crystal can needs grounding? | 01/01/70 00:00 | |
Do never solder the can!!! | 01/01/70 00:00 | |
Do never solder the can... | 01/01/70 00:00 | |
So do I... | 01/01/70 00:00 | |
A berylium copper "touchie" is a good solution | 01/01/70 00:00 | |
32 KHz Oscilator, Capacitors and Resistor | 01/01/70 00:00 | |
32 KHz Oscilator, Capacitors and Resistor | 01/01/70 00:00 | |
Why the 330K resistor is needed | 01/01/70 00:00 | |
Exactly, but not only... | 01/01/70 00:00 | |
First Google Search on 32.768KHz oscillators | 01/01/70 00:00 | |
What micro? | 01/01/70 00:00 | |
Capacitor for 32.768 crystal![]() | 01/01/70 00:00 |