# \#pulse-generator
**URL:** https://forum.plexim.com/tag/pulse-generator/625.md
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## [How to Generate a New Pulse When Frequency Changes](https://forum.plexim.com/t/how-to-generate-a-new-pulse-when-frequency-changes/1877)
**Author:** [@MarkLin](https://forum.plexim.com/u/MarkLin)\
**Replies:** 8\
**Last updated:** [April 10, 2025, 5:56pm UTC](https://forum.plexim.com/t/how-to-generate-a-new-pulse-when-frequency-changes/1877 "2025-04-10T17:56:08Z")
Dear all, How can I generate a new pulse when frequency changes? Given the fact that the transition of the switching frequency for a PWM completes only in less than 1 ns (in simulation it is almost a vertical straight l…
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## [Simple implementation of a variable peak sawtooth generator?](https://forum.plexim.com/t/simple-implementation-of-a-variable-peak-sawtooth-generator/1302)
**Author:** [@Mostafa\_Amer](https://forum.plexim.com/u/Mostafa_Amer)\
**Replies:** 1\
**Last updated:** [December 22, 2023, 10:52am UTC](https://forum.plexim.com/t/simple-implementation-of-a-variable-peak-sawtooth-generator/1302 "2023-12-22T10:52:46Z")
I want to implement a fixed-frequency sawtooth generator with a peak voltage (Vpk) that I can control using an external variable (Vx). I created a simple circuit using a voltage controlled current source, a capacitor, an…
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## [How make a variable pulse generator](https://forum.plexim.com/t/how-make-a-variable-pulse-generator/1267)
**Author:** [@DSotoriva](https://forum.plexim.com/u/DSotoriva)\
**Replies:** 3\
**Last updated:** [September 13, 2023, 10:14am UTC](https://forum.plexim.com/t/how-make-a-variable-pulse-generator/1267 "2023-09-13T10:14:19Z")
Hi I need some help about the Pulse Generator. I want to use one pulse generator block, start with a 0.5 duty cycle wave, and in another period the duty cycle change for 0.8 for example, but using only one block in the …