login
How to Actually Make it Oscillate?
Now for an oscillator to work, we need an amplifier with a gain of greater than 1, and a phase shift of 360 degrees to get positive feedback.
First problem – the transistor was saturated, with Vc stuck near 0V. For an oscillator to start noise gets amplified, filtered by the crystal, amplified again etc. I reasoned that if the amplifier wasn’t biased to be linear, the oscillations couldn’t build up. So I reduced the collector resistor to 6.8k, and changed the the base bias resistor to 1.8M to get the collector voltage into a linear region. So now we have Vc=3.2V with a 5V supply.
Troubleshooting a 32kHz Crystal Oscillator – [Link]
Please follow and like us:
RELATED POSTS
5 August, 2019 Arduino Voltmeter using SH1106 OLED display
12 January, 2018 Arduino Real Time Clock with DS1302 and Nokia 5110 LCD Display
14 February, 2023 Exploring The All New ATEZR P20 Plus 20W Laser Engraver 
17 July, 2018 Virtual Helium Atom with Virtual Breadboard Infinity-Shield
13 July, 2018 Wavecatcher – Acoustic cryptanalysis
20 February, 2022 IA8201 Audio Edge Processor enables accelerated machine learning inferencing
Subscribe
Login
0 Comments
