[sergey23 0]

Hello,I am fluent Russian reader and speaker , however I have lots of mistakes when I write, so if its comfortable with the members of this forum I can perfectly understand your answers.

I have saw a circuit shown below which is R-C integrator  with a Zener diode and the ZENER diode performs a level shift with the amount of its reversed bias voltage.

In the End there is a photo of a DC-DC simulation photo I have built.SHDN discharges signal at 3.3V(GPIO '1') and attached with LTC1261LCS8-4.asc 
I want to do the same trick here ,to send a pulse of 0 till 3.3 and using some Zener diode to get -3.6 till -0.3 for example.
Is there a way to implement the same zener diode level shifting or other clever way to shift the pulse ?

Thanks.

 

level_shifter_zener.asc

LTC1261LCS8-4.asc

Изменено 15 апреля пользователем sergey23

[MegaVolt 25]

Сложно понять что вы хотите сделать 😞

Можете ли вы описать задачу отдельно от решения?

[Plain 168]

[sergey23 0]

Hello MegaVolt, Sorry for not being clear enough ,currently the is a pulse of 0 till 3.3 going into the mosfet as shown below in the red arrow.
I want to take this signal and to do some thing so i will get a signal shifted by some -X volts.

 Plain gave an intresting solution which i woul try to incorporate but they need an extra power supply ,Is there some zenner diode trick as i shown in the first post?

Without adding extra power supply?

Thanks.
 

 

 

[Plain 168]