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Differentiator Circuit using a 555 Timer Ic
Differentiator Circuit using a 555 Timer Ic
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Old 20th September 2019, 02:17 PM   #1
ajaysankarg3 is offline ajaysankarg3
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Default Differentiator Circuit using a 555 Timer Ic

I want to make a Differentiator Circuit using a 555 Timer Ic , what were the conditions i need to maintain
i bought the 555 timer ic at
BIGBELECTRONICS

can anyone help me in this
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Old 20th September 2019, 02:36 PM   #2
Osvaldo de Banfield is offline Osvaldo de Banfield  Argentina
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To diferentiate a pulse you need a resistor, a capacitor (or an inductor). With or without active circuits.
But until understand you will use the 555 to compose a pulse of different time of the original. Then you need to build a monostable whose RC constant be properly chosen to the new time you want, and a much smaller RC time entering the original pulse at the trigger input, properly biased.
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Old 20th September 2019, 02:44 PM   #3
MarsBravo is offline MarsBravo  Netherlands
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Can you explain what to differentiate and to what?
The 555 is a very specific yet universal timer ic.
The input is a window comparator which outputs set/reset a flipflop. So when a difference is sensed between treshhold and/or trigger at the edges of the window (1/3 & 3/2 Vdd), the output and discharge switch accordingly, but no subtle analogue value. CV is for modulating the window only (or not).

I have no direct memories (40+ electronic years) of applications as 'differentiator', other then all timer circuits in the application notes.
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Old 20th September 2019, 03:01 PM   #4
Osvaldo de Banfield is offline Osvaldo de Banfield  Argentina
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Yeah, is very "rare", but 'till I understand he wants to make a pulse, narrow than the original one. So I gave my idea under those conditions. Let's wait for his answer.
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Old 20th September 2019, 11:58 PM   #5
MarsBravo is offline MarsBravo  Netherlands
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So, ajaysankarg3, enlighten us your challance. We're happy to contribute.
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Old 21st September 2019, 02:33 AM   #6
PRR is offline PRR  United States
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I suspect spam. Trying to promote the site linked in his one-and-only message. Not knowing that a '555 is not a prime pick for a differentiator.

If I am wrong, I apologize.
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Old 21st September 2019, 04:50 PM   #7
DF96 is offline DF96  England
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Possibly a student wanting help with a homework assignment (which he may have misunderstood)? We used to get lots of those on here, but fewer in recent times. Maybe they all go elsewhere now for illicit help?
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