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Understanding Diode ROM
I read that the intersection of a row and column represents a bit, and if an intersection is linked with a diode the corresponding data output line goes low or 0. But why?Take the following figure for...
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Understanding a short solution to a diode exercise
Given the circuit diagram below, indicate the on/off state of each diode and calculate the output voltage \$V_o\$ in each of the two half-cycles of source \$V_1\$, which applies a square wave with an...
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Analysis of the circuit and transfer characteristic
In order to analyze how the circuit works, we need to use the superposition principle because we have two sources and we need to make assumptions about when the diode \$D_1\$ is ON and when the diode...
View Articledirectly connecting highly doped metals to the active intrensic region in an...
Why are p- and n-doped semiconductor layers essential in an LED structure? What would happen if, instead of using these layers to inject carriers into the active region, we directly connected highly...
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Can common diodes replace Zener diodes in ideal and purely theoretical circuits?
I have just learned about Zener diodes and was surprised by how its analysis is almost identical to how one would analysis a common diode, like the bias voltage, the current-limiting resistor, two...
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Path of back emf current in H bridge motor driver
When Q1 and Q4 are turned ON, the motor starts running. However, when Q1 and Q4 are turned OFF, does the back EMF current of the motor flow through D3 to the positive terminal of the battery, then...
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PIC16F886 and Switch Setup with Diode
I would like to make a simple embedded program that will Display what is happening on and LCD screen. When Switch One is pressed, it displays "Switch One". When Switch 2 is pressed it displays Switch 2...
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Separating 5v and 12v circuits using diodes, converters, and switches
I have drawn out a project with multiple power options.I am wondering if any of these reverse current protection diodes can be left out.If the double pole double throw switch can be replaced by a...
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Choice of flyback diode
I have a 12V 2 motor agriculture spray pump and a 12 V solenoid valve. I need to know which flyback diode to use, and how to make the choice. I have been told that the transients are very short lived...
View ArticleDiode-less op amp circuits that can simulate a diode
Gyrators can be used to simulate circuit properties of inductors. Is there something similar you can do, where you use a circuit with no diode to simulate a diode?
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Adding diodes in parallel with a load
So apparently Sensitive electronics only sees voltages between 0.7 and -0.7I don't quite understand, I tried simulating it but:Where am I wrong
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What is 16A TLP in ESD diode and how it determines the clamping voltage of an...
Please explain the meaning of 16A TLP in ESD diodes? Is the clamping voltage determined at 16A transient current flowing through diode? Please see the table in the below picture:
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Identify the package of this diode
I need to create a PCB in EasyEDA, and I need to include this diode, but I am unable to figure out what package it has. Can you please help me?
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Ideal diode using PMOS and two PNP transistors not behaving as expected
I'm using the circuit given in the example here:Understanding an 'ideal' diode made from a p-channel MOSFET and PNP transistors[a]Basically there are two issues.In the forward direction [Vin = 15V on...
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Finding the diode ID and VD in a circuit
I was asked to find the ID and VD in this circuit. The Vknee = 0.7V , Vin = 5 V and R = 1000 ohms.I just wanted to make sure I'm understanding how to solve this correctly, so what I've done is:Vin = 5...
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Driving 12V hand wound solenoid using PWM
I'm trying to drive a hand wound solenoid (140 turns of 0.8mm enamel copper wire, 4cm long) with a 12V/2A power supply. I need to control the intensity of the force generated by the solenoid, so I'm...
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DIODE: why is it that as current --> infinity ( gets really large) the...
In a forward bias Diode, why is it that when current gets really large :voltage drop across the diode does not increase a lot ( its because of logarithmic nature? and if so why is it logarithmic)The...
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24V Bidirectional TVS diode in a 3.3V device
The schematic of this PIR breakout board has D1, a bidirectional TVS diode connected in parallel to the decoupling capacitor C1. My understanding is that the TVS diode is used as ESD protection, but...
View ArticleWhat is the smd component with 6 pins, sot23, with smd code 64 and 90°...
This smd component passes 3.3v from the controller of addressable led diodes. There are two traces after it and the 3.3v are supposed to reach two connectors which receive +12v,3.3v and GND. On the pcb...
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