Nearly half duty cycle multlvibrator

Posted on Dec 4, 2012

Three factors contribute to the output symmetry. The capacitor charges and discharges through the same external resistor. An internal resistive divider sets accurate switching thresholds within the chip, the bipolar types use dividers, as well. Most importantly, ICl`s CMOS output stage switches fully between ground and ICc, avoiding the errors from asymmetry that are often found in a TTL timer`s output.

Nearly half duty cycle multlvibrator
Click here to download the full size of the above Circuit.

The IC"s internal switchingthreshold tolerances can cause a deviation of several percent from the desired 50% duty cycle. To meet a tighter specification, you might have to select from a group of ICs.

Leave Comment

characters left:

New Circuits



Popular Circuits

5-12V 200mA Regulated Power supply
DS1621 IIC interface under Linux drives designing
low frequency oscillator
whats wrong my h bridge drivers
Neuromorphic Silicon Neuron Circuits
AT89C2051 Night Light Saver
Push Pull Triodes for Class C