Design
in [Electronics]
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economics: Germany http://www.ft.com/cms/s/0/1f011f36-87ae-11df-9f37-00144feabdc0.html It appears that the Germans, at least, appreciate where they are on the Laffer curve. John ... 24 Jul 2010 16:41
Phase Inverter for Guitar Amp http://www.schematicheaven.com/boogieamps/boogie_lonestar.pdf I'm trying to understand how the phase inverter works in the amp above(3rd page before the power amp). I seee it is basically a normal common emitter. For DC, we simply have the 470 and 15k resistor in series giving the bias for the two tubes wh... 5 Jul 2010 03:30
High voltage diode blowing mysteriously I have a high voltage power supply, http://myweb.msoe.edu/williamstm/Images/Tubescope_Supply2.png under reasonable load (140VDC link voltage; Vadj set for 230V output; 3A heaters, fractional mA at -2kV, 100mA at +230V, 35mA at -230V). It runs cool and smooth for about a minute (aside from the snubbers, which get qui... 8 Jul 2010 12:31
Do it Yourself Solar Green DIY Green DIY Energy gives you complete guides for using energy from solar and wind. This package includes seven bonus eBooks on topics like solar arrays, tax credits, wind maps, how to install solar panels, and more. Also have helpful videos, It seem to learn better from videos. http://power-shift.org/do-it-yourself-s... 4 Jul 2010 16:39
input impedance of THAT 1512 IC Hey all; I've been reviewing the THAT 1512 data sheet (http://www.thatcorp.com/datashts/THAT_1510-1512_Datasheet.pdf) and am trying to figure out what the input impedance would be for the circuits they've given.In Fig. 4 on p. 6 for instance, would the input impedance be 1K, or 1K||1K = 500 ohms, or 2K, or somet... 5 Jul 2010 00:15
Do it Yourself Solar Green DIY Green DIY Energy gives you complete guides for using energy from solar and wind. This package includes seven bonus eBooks on topics like solar arrays, tax credits, wind maps, how to install solar panels, and more. Also have helpful videos, It seem to learn better from videos. http://power-shift.org/do-it-yourself-s... 4 Jul 2010 16:39
Electronic fuse I need a current limiter, so I looked at poly fuses. They're pretty sad. And regular fuses are awfully crude--make one mistake and you have to desolder a fuse? That's no fun. So I was thinking about the Larksonian current limiter... Fig. 1 (View in Courier font) ====== Q1 -------. ... 5 Jul 2010 15:33
Where is Archimedes Lever?? Archie > Except that there is no abuse taking place, dolt. It will take time to assess that. ... 7 Jul 2010 02:34
Suggestions for stabilising a TL431 + MOSFET current sink Hi there I've built a one amp current sink and at present it is uncompensated and it is performing quite nicely as a 200kHz power oscillator, with about 2V p-p across the 2.579 Ohm compound current sense resistor. Following text is based a screen scraping of a web page I just put up, along with some picture... 4 Jul 2010 15:33
Modules dying when 24V vehicles are jump started We provide support for a number of systems installed in 24V vehicles. When the vehicles are not in use, the users like to leave the system's main power switch and circuit breaker both in the on position. If the vehicle then needs to be jump started, the users often do not first turn off the system's circuit breake... 8 Jul 2010 16:59 |