That's better than what he was using.Diodes are 1N4148
Smoke and flames from the 555. Pin 7 is an open-collector current sink that is used in this circuit to drain the charge from C1 through R2 and the diode next to pin 7 to ground. Without R1, the power supply would be shorted to ground. As it is, with Vcc=12v and R1=1k, there will be 12mA flowing through R1 to pin 7. This alone may increase the voltage on pin 7 to 0.2v, causing it to take longer to discharge C1.Removing R1 from this circuit would result in what?
Not easy to do. Replacing the diodes with Schottky versions will certainly help.Is there a 555 configuration that can change duty cycle without a frequency change?
Yes, it does have something to do with "that plot".alright so the Diodes affect the circuit calculations. Can anyone show me how? I bet it has something to do with that plot...
It's just like eating an elephant - just take one bite at a time.But the parallel-ness and the diodes facing different ways and the capacitor are throwing me around.
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