- #1
gnurf
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I hooked up a small circuit I found towards the bottom of this url and plotted the result in a spreadsheet (figure 1). Figure 2 shows the DC-coupled output waveform at 12V input. Only the frequency changes at different input voltages.
So what's going on here?
Figure 1:
Figure 2:
Hint 1: Relaxation oscillator
Hint 2: http://www.eng.yale.edu/ee-labs/morse/compo/datasheets/2n2222.pdf
Hint 3: PN junction
EDIT - To avoid confusion: The Vce voltage from the table in Figure 1 is the 'DC' voltage measured with a multimeter.
So what's going on here?
Figure 1:
Figure 2:
Hint 1: Relaxation oscillator
Hint 2: http://www.eng.yale.edu/ee-labs/morse/compo/datasheets/2n2222.pdf
Hint 3: PN junction
EDIT - To avoid confusion: The Vce voltage from the table in Figure 1 is the 'DC' voltage measured with a multimeter.
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