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Title: Hard to believe this actually worked (correctly!!). Post by: steve_qix on February 19, 2019, 09:30:18 PM I was going through some old pictures from 2001, and found this - the first 1kW solid state pulse width modulator I ever built. Unbelievable that it actually worked, but it did and I used it for quite a while before laying out PC boards.
Amazing !! (http://www.classeradio.com/first_kw_pwm.jpg) Title: Re: Hard to believe this actually worked (correctly!!). Post by: w8khk on February 20, 2019, 12:36:28 AM Wowsers! I need to build me one of those!
Hiram would be elated. Ross Hull would be mortified! Makes my mouth water - Turn up the wick! Title: Re: Hard to believe this actually worked (correctly!!). Post by: WA2SQQ on February 20, 2019, 07:18:10 AM Never underestimate the magic of clip leads!
Title: Re: Hard to believe this actually worked (correctly!!). Post by: KK4YY on February 20, 2019, 12:53:39 PM I wonder what's on that bench today... and what's to come! :)
Title: Re: Hard to believe this actually worked (correctly!!). Post by: W9ZSL on February 20, 2019, 01:40:13 PM How to terrify a Klingon!
Title: Re: Hard to believe this actually worked (correctly!!). Post by: WA2TTP Steve on February 20, 2019, 01:43:26 PM It’s called R & D! Love it
Title: Re: Hard to believe this actually worked (correctly!!). Post by: WD8BIL on February 20, 2019, 02:36:23 PM When you consider what stray inductances and capacitances can do, it amazes me all the more!
Title: Re: Hard to believe this actually worked (correctly!!). Post by: KL7OF on February 20, 2019, 03:29:50 PM is the bag of orange drops part of the circuit?
Title: Re: Hard to believe this actually worked (correctly!!). Post by: KA0HCP on February 20, 2019, 04:05:44 PM is the bag of orange drops part of the circuit? Para-sympathetic capacitance! ;)Title: Re: Hard to believe this actually worked (correctly!!). Post by: kd1nw on February 20, 2019, 07:14:05 PM "Don't let perfect be the enemy of good enough"
I think I'll hang that pic up in the shack! Title: Re: Hard to believe this actually worked (correctly!!). Post by: w4bfs on February 21, 2019, 03:11:41 PM my experience has often been that a prototype (as in your example) works perfectly but the following pilot run doesn't
.... Murphy will have his pound of flesh ! .... Title: Re: Hard to believe this actually worked (correctly!!). Post by: KD1SH on February 21, 2019, 05:44:24 PM Another excellent picture to set as desktop wallpaper to annoy my obsessively neat coworker. ;D
Title: Re: Hard to believe this actually worked (correctly!!). Post by: K9PNP on February 22, 2019, 01:06:21 PM Looks like something I had on the bench 2 weeks ago. Mine had less components but more clip leads.
Yep: Murphy was sitting on my shoulder; the clip lead version worked, the soldered together version with the same identical components didn't. Title: Re: Hard to believe this actually worked (correctly!!). Post by: K9EID on March 05, 2019, 01:30:51 PM Steve
Can I show this in Ham Nation as to how to start a project? Of course it worked! I do believe each of us have done similar things before and each of them amaze us how well they work ! Keep that soldering iron close by and hot. Dr. Bob Title: Re: Hard to believe this actually worked (correctly!!). Post by: steve_qix on March 05, 2019, 02:24:33 PM Steve Can I show this in Ham Nation as to how to start a project? Of course it worked! I do believe each of us have done similar things before and each of them amaze us how well they work ! Keep that soldering iron close by and hot. Dr. Bob Sure Bob, no problem :D Regards, Steve Title: Re: Hard to believe this actually worked (correctly!!). Post by: N1BCG on March 05, 2019, 03:06:19 PM Can I show this in Ham Nation as to how to start a project? "The Pineboard Kilowatt" Title: Re: Hard to believe this actually worked (correctly!!). Post by: K9EID on March 05, 2019, 03:24:59 PM Thanks Steve
How fun....love home brew projects and especially ones that work really good Who cares about how they look. Usually not on ATV so all we have to worry about is they the projects sound good.... ....and yep - a Pine Board KW. Now that's funny ! Title: Re: Hard to believe this actually worked (correctly!!). Post by: KA0HCP on March 05, 2019, 10:25:28 PM Can I show this in Ham Nation as to how to start a project? "The Pineboard Kilowatt" Title: Re: Hard to believe this actually worked (correctly!!). Post by: WA1LGQ on March 07, 2019, 12:11:18 PM Show that pic to the XYL and tell her that you are going to do the same.
Title: Re: Hard to believe this actually worked (correctly!!). Post by: Opcom on March 08, 2019, 11:24:45 PM Show that pic to the XYL and tell her that you are going to do the same. Do this after you have picked out the new transmitter but before purchasing it. As a way of 'running it by the XYL'. |