Recent content by jimmyinct

there is a section on how to determine the frequency responce in A RLC circuit below. It can be used as template. http://en.wikipedia.org/wiki/RLC_circuit

thank everyone. I think i got it now. there are two decoupling capactiors that have to be used iwth this chip. When not used, the circuit is get stuck as it was for me, and thus loads it down. A very funny design. Anyway, its working. The intersil support was kind of tricky. The first time...

Im working on building an ultrasound driver for a research. I found one online that seems to be well documented. It is basically a class D audio amplifer. There are two figures given in this pdf below. Figure 1 is the main core of the circuit...

what is your specific application or goal

capacitance does not depend on voltage voltage depends on capicatance capacitance is fixed in value voltage over the capactior is a function of both time and frequency of which are recripocal in nature. You can ball park the voltage in the time domain by the time constant. In the frequency...

thanks yup, i think i got the transducer loading down. I think. Its just a series RLC and i calculated the L to make the trsanducer (C) resonsate.

i did call up irf today. the those 2xxx series would be perfect except that they dont really run over 1mhtz. I need to have a 1.5htz driver. interstil has 40 mhtz drivers, but they dont really have the output or voltage. pin drivers i believe

wow i didnt know there were driver chips for switching mos in push pull configuration. that saves a lot of trouble, thanks man!! the even have high volt ones too. https://ec.irf.com/v6/en/US/adirect/ir?cmd=catProductDetailFrame&productID=IR2213 Ill give the tank- paraell circuit a try too. I...

nope, there was no app notes. its from http://www.eblproducts.com/transducer.html These are more specality transducers For this applicatition, we are driving them at much more power than the average application would use. It seems very similar to a audio amplifier, just a higher frequency...

yea, thats the idea. then swictching at 1.5hmtz Im sure there will be lots of frequency dependent losses. i think i need to use a push pull configuration.

and there is a vcc, no -vcc vcc is 300volts

hello Im trying to build an ultrasound transducer driver. The load is a RLC circuit that resonates around 1.5mhtz, this is 20ohms in series wtih 1.8uh and then 9.9nf. The C is the transducer. The load in either in the common source or drain configuration of the power mosfet in not amplfying...