Clock to run a circut, new way?

Yo,

The chance that you have something original here is vanishingly small, and the odds of getting a patent are even worse.

Relaxation oscillators without any obvious explicit capacitors are common, but they do have capacitors, which are an intrinsic part of the components in the oscillators. Consider using logic gate delay. This delay is due to capacitance and stored charge in the wiring and transistors making up the gate. For example, a logic-inverter ring oscillator, where the frequency is tuned with the IC supply voltage.

Yeah, most of the time when I set out to build an amplifier it oscillates instead :-). Don't worry, you'll get better at it...

Old saying among analog engineers: "Oscillators dont - everything else does".

Sure you can patent a circuit. It's not generally done because it's too easy to circumvent a "topology" patent. Not too many others care much about IPL either, unless you have some expensive hired hands.

mercury columns

^^^^ AC

John

"Saint" wrote in news:1108818154.010890.252770 @c13g2000cwb.googlegroups.com:

Since it's been "fully tested", what're the spec's? Low frequency capability? Accuracy? Stability? Output drive? Operating voltages and current requirements?

The programmer's corrilary: "Constants aren't and Variables won't."

Delay? Did you say delay? What a novel concept.

There are many such devices. Phase delay schemes, for example using multiple amplifiers or gates, or R/C or R/L or L/C networks, transmission lines, or ... in order to provide a frequency dependant delay in combination with an amplifier to make a clock. Or mechanical schemes, using vibration of crystals or tuning forks, or ...

You'll need to ensure it works at 3 - 3.3 V too for it to be of any general interest not to mention lower voltages too.

How accurate is the frequency ? Unit to unit.

When I last checked, you can't patent a 'circuit'. It has to be an application. The Chinese don't care much for intellectual property law - so it'll get ripped off anyway. ;-)

Graham

....any old amplifier with positive feedback...

Covered by the above.

In article , Winfield Hill wrote: [...]

Way back when I was a mere lad, I knew someone who had invented a very slow PNP transistor. Only after he invented it did he discover that he was about the 3rd to do so. The HFE of the device was low because the base was effectively about a foot thick. Its great charm was that if you applied a pulse on the base, a pulse would appear on the collector with a lot more delay than the frequency responce of the circuit would suggest. The extra delay was due to the holes having to wander through some sort of magic doping gradient in the base. Perhaps this has just been re-invented.

Most go only one way though.

"Some girls will, some girls won't."

Ken

And some oscillate between the two extremes.