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You are here: Home / Replies / Hii, Ajish sry fr d

Hii, Ajish sry fr d

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Microcontroller › 8051 › GENERATING VARIABLE PWM › Hii, Ajish sry fr d

August 18, 2012 at 8:29 am #8476
Varun Srivastava
Participant

Hii,

 

Ajish

 

sry fr d delay…!!!

 

Iwould lyk to let u knw dat the problem is resolved on hardware by considering switch debounce into account.

 

I would also lyk to give you more overview of wat i m doing.

 

I am using this GENERATED PWM for driving the GATE of a MOSFET which infact is controlling the current in my LOAD and wid all our previous efforts we are able to vary the DUTY CYCLE of the PWM.

 

 

Now the next problem which is faced is that the LOAD is taking HICCUPS due to discontinuity of the GATE driving voltage wen i change the PWM DUTY CYCLE as there is no voltage present at that duration of time when the switch is pressed and the DUTY CYCLE changes.

 

As per my knowledge, I think that this is happening bcoz dere is no HOLDING CURRENT to sufficiently keep the MOSFET on during that period of SWITCH press.

 

I would lyk to know about ur suggestion over this thing and whether you have any other possible explanation that why this is happening, also if u cn provide any information how to maintain this HOLDING CURRENT in MOSFET.

 

 

Expecting to hear frm u soon.

 

Thnx

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