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Hassan Raafat
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can i understand at OR gate with diodes , why o/p not equal the sum of two voltages (5+5=10v) , it's confusing me ?
Hassan Raafat said:why don't we sum the two voltages resulted from two diodes ?
SN7438Jeff Rosenbury said:Using the way back machine, I remember circuits with open collectors and simply wiring two signals together to get a virtual or gate. They were called "wired ors".
But now they're ROSH compliant wired or gates.CWatters said:Still used today... I think the Raspberry Pi has an I2C bus and (if the lead in the solder I use hasn't affected my brain) I think that uses an open collector/wired OR system.
I know it's bit late for me to join in but it would have been a good idea to supply a diagram with this, initial question. Once C Watters supplied one, the answer was clear. Circuit problems are usually much more easily solved with the actual circuit sitting in front of you.Hassan Raafat said:can i understand at OR gate with diodes , why o/p not equal the sum of two voltages (5+5=10v) , it's confusing me ?
I wondered where that extra limb came from.meBigGuy said:No body was inhaling lead fumes (1750C to vaporize lead). It was flux fumes. You still inhale those. One develops a technique of exhaling to blow the flux away as they solder.
From wikipedia
The lead in solder will not typically get hot enough to vaporize and become airborne. However, you will end up with lead on your hands after handling solder, so it is necessary to wash your hands with soap and water afterwards. Lead is toxic and can cause a variety of health problems. Children and pregnant women should avoid all contact with lead due to the severe developmental problems it causes.
thanks for your time :) , I've understood it .sophiecentaur said:I know it's bit late for me to join in but it would have been a good idea to supply a diagram with this, initial question. Once C Watters supplied one, the answer was clear. Circuit problems are usually much more easily solved with the actual circuit sitting in front of you.
PS Now you've gone and rattled the cages of the 'Conservationists'! They will be sleeping tonight with visions of glowing radio valves and carbon resistors.
An OR gate with diodes is a logic gate that performs the logical OR operation using diodes as its main components. It takes two or more input signals and produces a single output signal based on the inputs. It is commonly used in digital electronics to combine multiple signals and determine if any one of the inputs is high (logic 1).
An OR gate with diodes works by using diodes as switches to connect the inputs to the output. When any one of the inputs is high, the corresponding diode will conduct and allow current to flow to the output, resulting in a high output signal. If all inputs are low, no diodes will conduct and the output will be low.
Diodes have a low voltage drop and are inexpensive, making them an ideal component for use in logic gates. They also have a fast response time and can handle high frequencies, making them suitable for use in digital circuits.
Yes, an OR gate with diodes can have more than two inputs. The number of inputs depends on the design of the gate and the number of diodes used. However, the more inputs that are added, the more complex the circuit becomes.
An OR gate with diodes and an OR gate with transistors both perform the same logical operation, but they use different components to achieve it. While diodes are used as switches in an OR gate with diodes, transistors are used as amplifiers in an OR gate with transistors. Additionally, an OR gate with transistors can have more than two inputs without increasing the complexity of the circuit.