11:45
DAS
When the pull up resistor, RA, in the monostable circuit is replaced by a constant current source, a linear ramp is generated. Figure 1 shows a circuit configuration that will perform this function.
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Figure 2 shows waveforms generated by the linear ramp.
The time interval is given by:
VBE . 0.6V For more informations: www.study2placement.blogspot.com
VCC = 5V
TIME = 20µs/DIV.
R1 = 47kΩ
R2 = 100kΩ
RE = 2.7 kΩ
C = 0.01 µF
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