You can use a mono stable multivibrator (74123, cd4538, or 555 timer) set to a pulse duration that becomes 10% of your continuous train of square waves. The monostable will be triggered with each positive to negative transition for some of the chips listed - one lets you pick (up or down transition). It doesn't really matter (up or down) since the period is the important part.I need to decrease the duty cycle of a square wave signal.
The signal is 1kHz the duty cycle is 25%.
I need to push the duty cycle closer to 10%.
Any suggestions for a simple means to do this?
Thank you very much for your reply. However, the issue is that I have no other DC or AC input in this case. I only have the PWM here.I assume you mean...
You can use a mono stable multivibrator (74123, cd4538, or 555 timer) set to a pulse duration that becomes 10% of your continuous train of square waves. The monostable will be triggered with each positive to negative transition for some of the chips listed - one lets you pick (up or down transition). It doesn't really matter (up or down) since the period is the important part.
Thank you for your reply. In my case, the PWM wave is generated by a device that is not able to be manipulated. I want to use this PWM signal as the only input to the circuit so that the output would be 10% duty cycle PWM.A schematic of how the current waveform is being generated would be most helpful.
A picture is worth thousands of words.
Right, you can tap into the 25% duty cycle 1kHz signal (1000 uSec period). Use that to trigger the cd4538 chip. Set the capacitor and resistor on the chip to create a 100 uSec pulse. You'll have a 10% duty cycle.Thank you very much for your reply. However, the issue is that I have no other DC or AC input in this case. I only have the PWM here.
For that impedance it would be better to use a CD4538 for the one-shot since it has a significantly lower operating current than the TLC555.the impedance should be 882 ohms.
As were mine.Questions meant for the TS, not a response to your post.
It might refer to one of the elements of a signal envelope along with "decay", "sustain", and "release". They are used in electronic instruments and Morse Code keying in amateur radio applications....
I have no idea what an "attack" circuit is?
Do you mean "added".
Yes, it means "added". I also attached the schematic figure for device A and B in the last post. Please check it. I think the circuit you provided should work. I have not got the component and test it phsycially, though.If the load (not the source) impedance is 882 ohms, which is a low value, then my suggested circuits will not likely work.
Need more info on both the source and the load.
I have no idea what an "attack" circuit is?
Do you mean "added".