BC517 DATASHEET PDF

The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume more than mA using this transistor. To bias a transistor we have to supply current to base pin, this current IB should be limited to 5mA. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV.

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When the Arduino pin is low, I measure around 14 volts across both transistors, which is fine. MarkT on Jul 13, We also replaced dstasheet transistor just in case it was broken, and tested some other crucial connections, although not all. Is it opto isolated? Where is the datasheet for this drive? I use supply with internal control voltage I think, so the first image. Expected result There should flow current to the controller enable when the Arduino puts 5V on the transistor, and not so otherwise.

Use fricking code tags!!!! Sorry for the bumping, but I just measured some things. Oh, hang on a second. Transistor Catalog If its isolated and it provides its own power, you can very simply use an NPN to switch it. Android app included, hooray for ethernet shields. Now looking at the second picture, and there I can switch the datasheer to ground. Actual result Unfortunately the motor always starts when I connect the transistor, even if the base is connected to the Arduino ground.

Thanks Tom, nice find, only one page further Related Articles.

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