2019年8月12日 · For some reason, I understand transistor logic gates, and I am able to solve problems, but for some reason I do not understand the and / or logic gates constructed by diodes. If someone can explain...

2025年1月14日 · Diode AND logic gate In the 2000s, I started teaching Digital Circuits and that is when I transferred my previous experience to unveil the philosophy of diode logic gates.

2013年2月26日 · Is it possible to build a computer (Turing complete) using only diode logic without transistors? I know DTL was a thing, but from what I could tell, they used transistors to amplify signals.

So I've been doing some reseach on DTL ( Diode Transistor Logic ) and started doing some problems, but the problem i stumbled onto gives me some headache. The actual problem given is Given a DTL

2017年1月25日 · I can use diode logic (DRL) or 7400-series logic ICs when I need OR gate or AND gate. Say 74HC08, 74HC11, 74HC21 (AND gates), or 74HC32 (OR gates). Diode logic seems to me simpler, cheaper and thus better. I prefer it in my small MCU projects. But I wonder if there are some general advantages of 7400-series compared to diode logic that I do not ...

2021年4月21日 · With R3 absent, there would be no element to pull down on Q1's base, and it would not be guaranteed to shut off when either A or B (or both) were logic low. In other words, the forward-bias voltage of DA or DB may not be small enough to ensure that Q1's Vbe is small enough to shut off. Also, as @Circuitfantasist pointed out earlier, you may need another resistance between the diode anode and ...

2017年8月4日 · A rectifier could function like a xor function, but you have to keep track of all four situations. Lets say the rectifier has terminals A and B and the output would be the difference between the + and - terminals. So yes you are correct, it does function like a xor gate (except you'll have the diode voltage drop included) Rectifier:

Diode can have (positive voltage or high impedance) or GND. If both are positive or HiZ then the output is true. If any of the diode is tied to the GND, then output is false. AND logic isn't it?

2014年12月3日 · Upon looking at the data sheet for the max31850, it looks like you want to connect an open-drain 3.3V output (or input) to a 5V input (or output when low). I don't think this is a good idea to use a zener- the knee is too soft, and the output driver of the max31850 is too wimpy (4mA) to make this work reliably. Also the minimum voltage to be recognized as a 1 is 0.6 Vdd, which is 3.0V, a bit ...

70 ns (40MHz) is really not a low frequency for wired logic and it's though also for HC logic. Consider parasitic capacitances that come using discrete diodes and eventually transistors.