This is known as a Colpitts oscillator and I soldered this up last night after dinner. To my surprise it worked on the first try! With the component values I used it oscillates between 0.7-2.8V at a frequency of 1.28 MHz.
this post was submitted on 05 Feb 2025
78 points (96.4% liked)
I Made This
2826 readers
238 users here now
Did you make something? Do you want the fleeting rush of endorphins that come with affirmation from strangers? Do you think what you made is neat? Share it here!
Paintings, movies, music, drawings, models, gardens, houses, snowmen, sandcastles - if you made it, you can post it.
RULES:
Some things you make are not to be shared. These include:
- Messes
- Children
- Biological... byproducts
- Bigotry
Do not be a jerk.
- No racism, sexism, homophobia, transphobia, ableism, classism, or bigotry of any kind.
- Don't try to sell stuff unless people ask. You can post your Etsy (or similar) if someone prompts you. No spamming self-promotion.
<3
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
1.28 MHz is about 100x over the limit humans are capable of hearing, so it's unlikely this is for a (musical) synth :)
I didn't study analog design too closely in school, but I understand that the superheterodyne technique for frequency mixing can be used to do some rather interesting things, such as taking the difference between two high frequency signals. Some things are easier to do at high frequency and then brought down to audible frequency, I imagine.
Alternatively, a synth for dogs haha