Re: Strange Mosfet Results

From: Active8 (reply2group_at_ndbbm.net)
Date: 08/03/04


Date: Tue, 3 Aug 2004 17:02:26 -0400

On 3 Aug 2004 13:50:34 -0700, Peter wrote:

> PS. See also my separate posting "Peak current to charge a capacitor".
> I was also concerned that adding too big a cap to the chip outputs
> might overload them when the cap is charging. How big a cap is too
> big?

Those specs that define max load capacitance apply to a faster
digital output where the cap is constantly being charged and
discarged. Also, if you try to drive a big cap it takes longer to
charge it up with a limited charging current.

-- 
Best Regards,
Mike


Relevant Pages

  • basic general question
    ... What im doing is charging a home made HV cap with the following. ... resistor or charging resistor was after the diode to prevent feedback ... as i dont want to drop below the 10ma current if possible and also ...
    (sci.electronics.basics)
  • Re: tech question: 1 farad battery cap failure
    ... I pulled the board then desoldered the cap. ... Do the 9 volt battery thing, ... So I guess the charging circitry on the mpu is dead. ... Now measure the cap Voltage. ...
    (rec.games.pinball)
  • Re: Homemade CDI
    ... CDI's basically work by charging a cap during the dwell period, and discharging through an SCR into the coil. ...
    (uk.rec.models.engineering)
  • Re: Ultra Power Battery
    ... He asked how he can charge a 2.5 V cap from a 12 v gen. ... what do you mean by "charging efficiency"? ... If you need to charge it, you have to have a higher impedaance source. ... You cannot connet directly the cap across the generator terminals. ...
    (sci.energy.hydrogen)
  • Black crud in oil cap.
    ... The battery is flat and will need charging so I've not ... but removing the oil cap there was a lot of ... hardened black crud inside the cap. ... a hard crud if not cleaned out. ...
    (uk.rec.cars.maintenance)