700Mhz oscilator

325

05:36:05

No crystal oscilator 

published 6 years ago

PrathikP

6 years ago

mHz is milihertz, which is different from MHz, which is megahertz. I've never used a 555 timer before, but I'm sure it can't do 700MHz.

wyoelk

6 years ago

I'm confused a bit also. It functions the same without the capacitor on the ctrl terminal. Still can change the 970 resistor or capacitor to vary the oscillating speed. So what would the CTRL and OUT terminals be used for in this case.

hurz

6 years ago

the cap at the CTRL pin is only to block stabilise an internal voltage divider. This divider is the reference when 555 decided to turn around from charge to discharge or discharge to charge. this is at supply 1/3 and 2/3. e.g at 6V supply at 2 and 4V. if this divider voltage ripples in amplitude it does tranforms this amplitude into a phase noise and at the end if its systematic into a frequency error noise. thats the reason we block it to keep it stable as reference, but it will work without, but less precise!

hurz

6 years ago

@wyoelk, you have noticed how Lenny removes your "good question" regarding DFF? Hes not able to collaborate or communitace or handle critique. He does not want to learn, hes just a bullshit talking troll but unfortunately dangerous.

Robert_Kidd

6 years ago

Look out everyone, “Lenny” puts words and circuits on this app and it’s “DANGEROUS”. Lol lol lol

hurz

6 years ago

i forgot, and needs an idiot to speak for him.

Robert_Kidd

6 years ago

Which is exactly where you come in.

kiani

6 years ago

Is that robi Len"s poooodle guard 🐩

wyoelk

6 years ago

I'll answer on a@lenny post.

zorgrian

6 years ago

Please let me know where these 555s come from. I wanna buy buy buy

kiani

6 years ago

There aren't many 555 chips in fact.. It is Lenzulbia. Keeps reposting his diabolical bistable circuits..

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