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  1. B

    TDA 7293 power supply?

    Split supply requirement pretty much rules out use in auto. Not to mention that although it operates @ 12v-+ min it really is a high voltage amp up to 50v-+. I think you will find plenty of ready made amp modules on Ebay, most modules being close to or less than the cost of individual amp chip.
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    Hall effect ignition

    As Kellys-eye says, re-invent the wheel. What you are attempting may seem simple at the outset but it will quickly get complex due to detail you never thought about. However, a bit of diy stuff here , if you must. https://transmic.net/
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    New to electronics, need help with a cam activated switch

    Yes, this was what I thought you were trying to get at and hence the "over-ride". Over-ride is a momentary contact switch that by-passes or Over-rides the cam operated limit switch. Momentary contact meaning it is closed only while being pressed so essentially it is a start button if you like...
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    New to electronics, need help with a cam activated switch

    I think you need to describe your application a little better. I can see no reason for a limit switch to change state only to immediately return to the previous state. What you are describing above is a monostable action and it can be done, I just don't see it in your application as described...
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    Need to abort a 555 1-shot timer with same pulse that triggers it

    Come on fellas.... It's not That difficult to learn to program Arduino. Kids in primary school do it every day.
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    Alarm Systems

    Typical PIR sensor zone arrangement. Used a 2 bob installer eh?
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    Need to abort a 555 1-shot timer with same pulse that triggers it

    Use an Arduino .
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    Finishing touches on motion alarm

    15/0.015=1k not 10k
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    Flashing 12v To Constant

    Take out relay, replace with mosfet. You said you don't want a relay so that means solid state relay is out also (ssr) ...????
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    Delay timer relay control connection problem

    As mentioned before, difficult to say without any spec sheet for the timer. However, as I suspected earlier, the trigger input requires a short pulse rather than a continuous high for 1 minute or whatever. With timer circuits this usually has to be shorter than the output pulse. So it appears a...
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    Delay timer relay control connection problem

    Kiwi was asking you to follow a certain sequence and give an either/ or reply to his query. This would then narrow down the problem. However, your reply seems to quote how you think the device should work.
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    In search of a brain...

    Saw a trip mechanism from inside an old elcb. Mechanism resembled a relay. Latch was mechanical off the armature, held closed by permanent magnet in the core. When power applied to the coil ( small current) flux of permanent magnet was overcome just enough to release the hold on the sprung...
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    Car TV Monitor, Blown fuse

    Bit of a tip when you have a known short somewhere you are trying to eliminate. Instead of blowing fuses continually, place a bulb in series. In your instance about 10w. When bulb is bright, short still present.
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    Delay timer relay control connection problem

    Photo shows a relay adjacent to the output terminals. Voltage free would be a fair assumption. Notes also refer to powering of relay.
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    transister eqvilant

    Some things are just not worth the hassle. This is one example.
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    Car TV Monitor, Blown fuse

    Read the number when you snip it to test out of circuit then Google.
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    12V-5V converter

    Heaps of circuits out there for 317 with pass transistor for higher current. Don't know if you'll get away without a heatsink though.
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    Delay timer relay control connection problem

    Circuit looks ok BUT there is an error in the marking of the output relay connections. ie your drawing shows the fish feeder connected to n/c and common whereas the web link to a similar unit shows the same terminals as n/o and common. So your should still work, just markings are wrong. I...
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    Component identification for old CNC router project.

    cnczone is a web site/forum dedicated to cnc machines and software. Google search usually works for me.
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    Help me !

    Data sheet link comes up as noise reduction headset.
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