A short story about Proteus7.5 (1) The use of PNP transistors

Publisher:DelightWish123Latest update time:2015-10-23 Source: eefocusKeywords:Proteus7  PNP  transistor Reading articles on mobile phones Scan QR code
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When designing a multifunctional electronic clock, I once encountered such a problem. I used the P0 port of the microcontroller to drive an 8-bit common anode digital tube through a three-wire decoder. After connecting the circuit and loading the code, the state of the 8th bit was always high after selecting PNP, and the rest were displayed normally, as shown below: From the figure, it can be seen that the bit selection signal from the decoder is normal, and it is always high after passing through Q8. Simulation is simulation. In order to continue to verify the feasibility of the code, a pull-down resistor was connected to the Q8 output, and the result was normal. Summary: When encountering inexplicable errors during simulation, you should first look for possible theoretical errors. If you can't find any, just "make do" with simulation, hehe...A short story about Proteus7.5 (1) The use of PNP transistors
     A short story about Proteus7.5 (1) The use of PNP transistors


A short story about Proteus7.5 (1) The use of PNP transistors
Keywords:Proteus7  PNP  transistor Reference address:A short story about Proteus7.5 (1) The use of PNP transistors

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