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windoze killa

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Posts posted by windoze killa

  1. Well I guess for a single battery purchase alkalines are cheaper. Most people don't consider the recharging advantages they just see the per item cost. Also the cost of the charger may put some people off.

    For example, here in Oz a packet of 10 Eveready Energiser AAs costs about $12. A packet of 4 NiMh AAs cost about $20. Face value says the pack of 10 is much better value.

  2. I assume when you say formula you want to know what dimensions you need to use. If this is the case then you should consider the centre frquency that you want. To make things easy we will use 100Mhz which is close enough to the centre frequency.

    Now that we have 100Mhz as the frequency one full wave length at that frequency is 3 metres, so a half wave dipole will require 2 lengths of 1.5M. Most antennas for the FM band are made from 300ohm ribbon. You slice down the middle of one end 1.5M and spread them out horizontally. For it to work the best you need to make sure that it is perpendicular to the direction to the transmitting antenna.

    Hope this helps a bit.

  3. I think you may have missunderstood my question. A CRO probe has an earth/GND lead on it. Sometimes when the probe doesn't have its GND lead connected to GND then there may be some spurious pick up at the tip. There could be a small GND point on the front of the CRO. Try connecting the GND lead to this point and see what occurs. This all assumes that you do actually have this GND lead (normally with an alligator clip on the end).

  4. I don't think so as the glowing of the wire has nothing to do with current flow. It is purely resdidual heat from the previous firing. As the fuel is compressed the flash point of the fuel lowers and bang.

    To start a glow plug engine you need to apply a voltage to the plug. This is removed once it has started. The burning fuel keeps the wire glowing until the next cycle.

  5. Well to start with 200F is not all that hot. Not even boiling yet. Most semiconductor manufacturers make temperature sensor chips. For example an LM45 is a 3 pin device that we use here quite a bit. It is rated for -20C to 100C (212F). This is quite small but it is an SOT-23 style package which will probably not pass your food requirements. There are other devices that are similar that come in a TO 92 package that may suit your needs better. The LM45 has a linear 10mV per degree C output. Just need to feed this into a micro controller and write some code to suit (sorry , not my forte).

    Sorry I don't have time to do a schematic for you but I am sure if you have a look at some datasheets you should be able to work it out.

  6. i've already designed d oscilator part....and there's no time for d remaining part.dats y i had put it on here for help...stop giving me stupid advices...if u can ....gimme r else...mind ur business.......i'm very much stuck in here...and u make fun of this issue.... ???

    Premece. Take your little oscillator, glue some sharp razor blades to it and place it where the sun don't shine.
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