Mahruz
Junior Member level 3
Hi All,
I am trying to find what the oscillation frequency is for the below colpit oscillator circuit.
Because of the varactors combination in terms of its bias, it is difficult for me to understand what its capacitance is.
I have also linked the datasheet for the varactors, transistor and resonator:
Q2--> https://www.digikey.com.au/en/products/detail/cel/2SC4226-T1-A/5218749
D50, D53 --> https://au.mouser.com/ProductDetail/Toshiba/1SV229TPH3F?qs=EEns8I54Y6DXAflo8LWGLA==
CR --> http://www.trans-techinc.com/webcoa...400&ftol=b&tab=yes&subInquiry=Find+Resonators
For the CR; please use the information from the second image below marked with red circles
The voltage at L10 is usually in the range of 0.5V to 3.3V(not sure if this is helpful)
Thanks for sharing your advise.
I am trying to find what the oscillation frequency is for the below colpit oscillator circuit.
Because of the varactors combination in terms of its bias, it is difficult for me to understand what its capacitance is.
I have also linked the datasheet for the varactors, transistor and resonator:
Q2--> https://www.digikey.com.au/en/products/detail/cel/2SC4226-T1-A/5218749
D50, D53 --> https://au.mouser.com/ProductDetail/Toshiba/1SV229TPH3F?qs=EEns8I54Y6DXAflo8LWGLA==
CR --> http://www.trans-techinc.com/webcoa...400&ftol=b&tab=yes&subInquiry=Find+Resonators
For the CR; please use the information from the second image below marked with red circles
The voltage at L10 is usually in the range of 0.5V to 3.3V(not sure if this is helpful)
Thanks for sharing your advise.