HP HP4145B

10 discussions on ElectronDepot about the HP HP4145B: what owners asked, what went wrong, and what fixed it.

What owners report

Curve tracers

Hi, all--I'm looking for a curve tracer. Ideally it would be USB-powered, and come with software that would make plots and generate data files. Nothing too fancy, just I_C and I_B vs V_CE and V_BE, and the equivalent for FETs. A plus...

Curve Tracers

Gentlemen,Curve tracers reveal useful info about the dynamic characteristics of semiconductors and make designing for same much more predictable and dependable than relying on spice models and simulation alone. But they're typically rare...

Floppy drive broken in HP4145B Parameter Analyzer

Hi,we are still using the obsolete HP4145B Parameter Analyzer. It's awonderful piece of equipment and it does the job.Although it is hooked up to GPIB, it still needs the floppy drive witha bootdisk. Unfortunately the floppy drive broke and...

Floppy drive broken in HP4145B Parameter Analyzer

Hi,we are still using the obsolete HP4145B Parameter Analyzer. It's awonderful piece of equipment and it does the job.Although it is hooked up to GPIB, it still needs the floppy drive witha bootdisk. Unfortunately the floppy drive broke and...

pHEMT model tweaked for 1/f noise

Hi, all, In one post on the 'purpose of precision' thread, I noted that the ATF38143 model I posted awhile back predicted way, way too much low frequency noise. The real pHEMTs tend to have a pretty accurately 1/f PSD with corner...

Laser diode driver

I am trying to modify a laser-scanner from a laser printer into a blue/violet photoplotter. I need some kind of driver for my blue/violetlaser. I've seen the schematics on Sam's laser faq, and looked atvarious ic's from maxim, analog...

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