TP600 - TPU PULSER

[z_p_e]

Upon request from a fellow researcher, I set out to design what I hope is a useful pulsing circuit that anyone can use in their TPU research. It is by no means limited to TPU research, but it was designed with the TPU in mind.

See the document for details, but in brief the unit provides:

- 50% duty cycle square waves from ~0.4 Hz to about 13 MHz in 7 ranges.
- 3 independent outputs, OR 3 synchronized (harmonically) outputs with one control.
- Generators, drivers, and MOSFETs all in one circuit.
- Relatively cheap to build.

Comments welcome.

Enjoy,
Darren

UPDATE: 2007 AUG 04

I've completed the TP900 design with the added Pulse Width function. Pulse Width range is from 5ms to 17ns. Hope it meets everyone's expectations.

Cheers,
Darren

UPDATE: 2007 AUG 07

Revision update from TP900.1 to TP900.2 due to resistor value error on R10, R16, R22. Should be 33k. The TP600.1 design is unaffected and remains unchanged.

UPDATE: 2007 AUG 31

documents have been removed, pm me if interested

UPDATE: 2007 SEP 22

Due to lack of responses and feedback, the documents will no longer be available.

[dutchy1966]

Hi Darren,

Thanx for putting this out here, well appreciated!
I'd like to ask if it is possible to adapt the design in a way that a much smaller duty cycle becomes possible. Lately a lot of ideas require a very small duty cycle. If that is possible it would make it even more flexible...

Regards

Robert

[z_p_e]

Hi Robert,

Thank you.

Yes, a more advanced design is already in the works...the TP900.

This one may have a higher frequency capability, with better phase matching on the synchronized outputs. Gate propagation delay becomes a significant factor when dealing with frequencies in the MHz range.

As a minimum, the TP900 will have a "programmable" (repeatable, accurate and matching pulse widths between outputs) pulse width output down to 5ns or so.

Regards,
Darren

[Super God]

Yes! Very good.  This was a great idea.  Keep it coming!

[turbo]

tHANKS  Darren

i think we can switch in something like one shot timers to take the control over the duty cycle.

i will order the parts and get building.

Marco.