Re: Sinbad System One problems

So I search out the 2N3055 here in the newsgroup and see that others
have this problem. Also found transistor at Rat Shack. I have also
read of anothe "pre-transistor and resistor frying. Is this the U45
right nect to it and the three resistoras bundled around it? Where
does one find a 9.1 ohm resistor? I will replace the 1N4004 on the
coil as suggested.

Still no word from anyone about using the # 7 connector on the J2 plug
as an alternative ground point on the driver board.
.

Relevant Pages

  • Re: About some parts on logical circuits
    ... chance on some pushbutton switch logic? ... I wasn't aware of the pull-down resistor issue. ... Since each transistor will have to feed a dozen of LEDs at 40mA ... Run the LEDs off the transistor's collector. ...
    (alt.guitar.amps)
  • Re: astable multivibrator issues - 2N3904s work, but not TIP31As
    ... the circuit would not oscillate unless I briefly disconnected then re- ... The main issue folks have is that they forget to bypass the power supply, ... As a side note, the easy way to build a square wave oscillator from a cmos 555 is to connect the output pin to a resistor, then connect the other side of the resistor to ground through a capacitor. ... For your application, you might use the discharge to directly drive one LED, and have the other LED driven by a power PMOS or PNP transistor. ...
    (sci.electronics.basics)
  • Re: Switching +/-12V from 6/0V
    ... total current through the 1K emitter resistor. ... > collector and emitter. ... It's the transistor that drops the rest of the voltage. ...
    (sci.electronics.design)
  • Re: LEDs on a vehicle
    ... > I could mate each LED with a 500 ohm resistor, ... transistor at the top of the string, just use pnp and flip everything. ... Draw a npn transistor. ... enough leds in the string to minimize the voltage drop across the ...
    (sci.electronics.basics)
  • Re: choosing a suitable transistor
    ... Will this transistor work instead: ... be able to do your own calculations of resistor values. ... If very short switching times are required, ...
    (sci.electronics.basics)