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Does anyone know where I can source one UCN5895A chip?
I have ordered it twice from a shop in Germany (where I have previously sourced components) but this item just does not arrive. The assure me it is being sent, but its not arriving.
This is the final component I need, and the project is...
Thanks for the replies, that explains the NPN / PNP difference to me.
No I am not using the same resistance values as the diagram.
For the base, I am using 5.1k and for the collector 510 ohms. Both having 5 volts (app) creates the 10:1 ratio you mentioned. These values were decided upon...
Well, the schematic is here......
https://www.electro-tech-online.com/attachments/pnp_led_driver-gif.6809/
The only difference between this circuit and mine is that I have put a 'pull down' resistor from the output of the 595 to ground to prevent the base of the transistor from floating...
Dragging up an old post!
Greetings everyone, I have been playing with the transistor switch circuit in Uncle $crooge's post for exactly the same application - switching segments of a 7 segment display (multiplexed) - from a 74HC595. The only difference between this circuit and mine is that I...
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