Clik here to view.
How does a push pull transistor switch?
I have some difficulties regarding this single supply diode biased push pull amplifier.Every book and video out there says when one transistor is on the other will be off - just as simple as that....
View ArticleClik here to view.
Is my approach to solve this diode question correct? [closed]
[This is my home work question and I looking for other approaches too
View ArticleHow much current can opamps' integrated ESD diodes carry during an ESD strike?
So the basic answer to such kinds of questions is usually: "If nothing is specified in the datasheet, assume the most conservative rating!"However, the datasheets usually only mention the DC limit in...
View ArticleClik here to view.
What is this SOIC-8 marked "BB REF / 02BU / 78GSY"?
I'm trying to identify an IC labeled BB REF / 02BU / 78GSY. It is an 8-pin SMD, in SOIC format.
View ArticleClik here to view.
ADS Simulation: Schematic to find input impedance
I'm following a paper, using ADS, to find the input impedance of a shunt Schottky diode. The paper's schematic is Fig. 1, and my schematic is Fig. 2.I could not get the same result as the paper...
View ArticleClik here to view.
Logic probe circuit; what is the use of some of his components?
I found this schematic on the Web and I built the circuit but,due to space constraints, I removed some components and it work well. I've not mounted the two diodes \$D_3\$ and \$D_4\$ and the...
View ArticleClik here to view.
Output control with protection using MOSFETs for bench power supply
Recently I been making bench power supply powered with both barrel jack and USB-C with support up to 3A output.I wanted to control output with ESP32 based MCU (3v3), it should be normally closed until...
View ArticleFor high power laser diode, how to determine relation between limit values of...
For a work project I have a laser diode of 808 nm wavelength. It allows current of 190 A at which it gives 2400 W of optical power. According to data sheet, at this current the allowed repetition rate...
View ArticleClik here to view.
Dual control of relay
I have one relay and two power sources. The first is a cellphone charger and the second is the HIGH signal from a GPIO on a Raspberry Pi.If any one of them supplies power the relay is on.If both...
View ArticleClik here to view.
What is this component that says S08S? [closed]
I damaged this component and it belonged to my laptop. I could not find manufacturer and name of the product.
View ArticleClik here to view.
Determining the ohmic value of a carbonized resistor in a flashlight circuit
this circuit is for a rechargeable flashlight. It charges the battery using a 220V power supply, after reducing the voltage. A capacitor and a resistor in this circuit are damaged. The capacity and...
View ArticleClik here to view.
Clik here to view.
AC Dynamo to DC System with Supercaps as Buffers [closed]
You are right Guys, I hope this is a bit better.Sorry for the inconvenience.The general Idea is to use Supercapacitors as a Buffer Reservoir for my Bike Lights (Supernova M99 pro mini 25 and Supernova...
View ArticleClik here to view.
Which is better - series or parallel rectifier? [closed]
The idea for this question gave me the question Understanding positive and negative rectifiers. Here I want to summarize the ideas behind the two circuit configurations - series and parallel, hoping to...
View ArticleClik here to view.
What is this diode marked IN4001 B4?
the information on the diode reads as either:IN4001B4OR1N4001B4I am trying to purchase a replacement diode and the only close matches I can find make no reference to the B4 element. Is this part of the...
View ArticleEstimation of when to prefer ultrafast silicon diodes over silicon Schottky...
When comparing "ultrafast" silicon diodes (those with usual recovery times given as either 50 or 75 ns) to silicon Schottky diodes at the same blocking voltage and average current rating, one notices...
View ArticleIs it normal to be able to tear off PCB components with bare hands? [closed]
I just ordered 5 boards from a popular Chinese PCB manufacturer and (for the first time ever w/ with this manufacturer) some SOD-323 diodes and their pads and adjacent tracks were peeled off out of the...
View ArticleClik here to view.
Can anyone solve this question using the "assumption" method?
I started with Vin<0 and assumed the 4 possible combinations of D1 and D2. For Vin<0, either D1 and D2 can be on or D1 is off and D2 is on. The book shows D1 off and D2 on as the correct answer,...
View ArticleClik here to view.
Ideal diodes question [closed]
I have a got problem that I'm having trouble to solve it: Find the Vo. this is an ideal diode model.how can I solve the problem with assumption process?I've solved it by saying that the D1 diode is...
View ArticleDiode heating of junctions
When a PN diode junction forward conducts heat is generated due to the product of forward volts and current.Is the heating evenly distributed between the P and N junctions? or is it the P? or is it the...
View Article