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Author Topic: Another question for Microwave VFO.  (Read 2408 times)

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Offline CacaoTopic starter

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Another question for Microwave VFO.
« on: June 26, 2017, 04:07:51 am »
How can I increase the Vpk-pk of the output? I've tried to vary the voltage and the resistors but it still not enough to make it reach 5V and up. Hope you can help me again. Thanks
Here is the simulation:
https://ibb.co/caCShk
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Offline jwet

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Re: Another question for Microwave VFO.
« Reply #1 on: December 11, 2021, 05:05:35 am »
Your bypassed collector load looks suspect to get good swings.  The Icc is about 7 mA, this is dropping a lot of voltage across the 1.5k bypass resistor.  Consider making this a 220 ohm and up the value of the C from 5 pF to 50 pF. 
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