joe smith | Conclusion to the worlds fastest breadboard oscillator @joesmith-je3tq | Uploaded June 2020 | Updated October 2024, 4 days ago.
In this video, I describe some of my more recent oscillators and attempt to break my friends 20GHz record. First, we need to sort out how to measure it.
For my final entry, I managed to get this breadboard oscillator to work slightly over 25GHz. I placed a picture of the final feedback network in the thread. There is a short clip of it running shown here: youtube.com/watch?v=H0KWrHMQgEI
Link to BreakingOhmsLaw's contest thread:
eevblog.com/forum/projects/challenge-thread-the-fastest-breadboard-oscillator-on-the-mudball
Contest Rules:
Build an oscillator on a breadboard, using nothing but discrete parts.
The aim is to achieve the highest frequency on the EEVblog forum. The current record holder may call himself the incumbent master oscillator for the time the record is held.
The rules:
1. No ICs (duh!)
2. No crystals / MEMS etc.
3. No soldering except to add wires to SMT parts. All electrical connections between individual parts must be made by the breadboard contacts.
4. The output signal shall be sine(-ish) and able to drive a 10k load at at least 5Volts peak to peak. UPDATE: You may deviate from this rule withitn reason.
5. Self-made discrete parts are allowed and encouraged.
6. No cheating. Drilling a hole through your workbench to connect your tracking generator to the underside of the breadboard will be frowned upon.
7. Post an image of your breadboard and counter/scope(Rule 6!) and brief info on the type of oscillator used.
8. Bonus points for nerd value (old/strange/obsolete/abused/haywire parts, exact frequencies, etc.)
EDIT: of course it is allowed to use common frequency doubling techniques, e.g. distorting and leeching harmonics. Knock yourself out.
In this video, I describe some of my more recent oscillators and attempt to break my friends 20GHz record. First, we need to sort out how to measure it.
For my final entry, I managed to get this breadboard oscillator to work slightly over 25GHz. I placed a picture of the final feedback network in the thread. There is a short clip of it running shown here: youtube.com/watch?v=H0KWrHMQgEI
Link to BreakingOhmsLaw's contest thread:
eevblog.com/forum/projects/challenge-thread-the-fastest-breadboard-oscillator-on-the-mudball
Contest Rules:
Build an oscillator on a breadboard, using nothing but discrete parts.
The aim is to achieve the highest frequency on the EEVblog forum. The current record holder may call himself the incumbent master oscillator for the time the record is held.
The rules:
1. No ICs (duh!)
2. No crystals / MEMS etc.
3. No soldering except to add wires to SMT parts. All electrical connections between individual parts must be made by the breadboard contacts.
4. The output signal shall be sine(-ish) and able to drive a 10k load at at least 5Volts peak to peak. UPDATE: You may deviate from this rule withitn reason.
5. Self-made discrete parts are allowed and encouraged.
6. No cheating. Drilling a hole through your workbench to connect your tracking generator to the underside of the breadboard will be frowned upon.
7. Post an image of your breadboard and counter/scope(Rule 6!) and brief info on the type of oscillator used.
8. Bonus points for nerd value (old/strange/obsolete/abused/haywire parts, exact frequencies, etc.)
EDIT: of course it is allowed to use common frequency doubling techniques, e.g. distorting and leeching harmonics. Knock yourself out.
