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Simple Voltage Divider w/ Diodes
I'm looking at the pictured circuit, and I want to find V_out in the case that the diodes are on. It seems like it should be a somewhat simple problem, but I've gotten stuck on it. Any help would be...
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Proteus X-Y mode graph
I am trying to plot the I-V characteristic plot of diode. However when I am dc sweeping the DC voltage source and plot the Id probe it is actually giving me Id vs V1 plot. But I want Id in the y axis...
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Bosch BHN20L/04 vacuum red light issue [closed]
I would like to bring the life back to this vacuum cleaner.The problem: When it gets power the led showing red and after 10 seconds it goes out.Manual says it's the 5S battery pack thermal sensor...
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Finding the current flowing through diode with knee voltage of 0.6 V and...
I am trying to find the current flowing across this diode as it assumes different models.I have calculated the current assuming the diode is ideal, as well as assuming it had a knee voltage of 0.6 V....
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What is the use of drain diodes in the circuit below?
This TC7920 driver will be driving a piezo electric load which may behave like a capacitive load at certain frequencies. There is another IC TC8220 which is the same except it is not having the drain...
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Diode Substitution for monitor power supply
I am repairing a power supply for a monitor and need to replace a diode, the one is question is a B5100C from Diodes Inc.I have an Onsemi FSV15150V, would this be OK as a substitute? From what I can...
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Is there any reason _not_ to add a flyback diode?
When using a MOSFET to power an inductive load like a motor, relay etc., it's well-established that you should add a reverse-biased diode across the load to protect from any kickback.I'm making a...
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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...
View ArticleWhy don't relays incorporate flyback diodes?
Warning: this may be an extremely naive question (if so, please enlighten me).Many applications of relays require a flyback diode to protect against inductive voltage. I'm unable to find any relay that...
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Do I require a flyback diode across this fan connector to prevent inductive...
I have the following schematic. A 5v DC fan is connected such that the 5v is connected to the positive terminal and the the ground connection is conencted to the drain of the Nchannel MOSFET. The...
View ArticleContribution of hole diffusion current and electron diffusion current in a pn...
I have recently got to learn that the hole diffusion current and electron diffusion current both point towards the N side in a PN junction? And the diffusion current is hence towards the N side.And...
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Keypad schematic - is it correct?
What do you think of this schematic for my Arduino keypad? Are the diodes pointing the right way?I will make col1"high" and then check pins row1, row2, row3 and row4 and see if current is flowing...
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Zener diode simulation issue
I have this simulation issue and I don't know how to solve it:The Zener current is smaller than the breakdown current yet the Zener diode still acts like a voltage regulator. Any help?Shouldn't the...
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What is the function of diode D1 in this circuit?
https://github.com/cubic-print/timeframe/blob/master/electronics/PCB_schematic_V3.JPGThis circuit is to strobe some LED's and a magnetic coil.D2 is to provide a path for flyback voltage from the...
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Help to identify this diode marked 'R4'
Trying to repair wiper motor made by bosch need to identify diode R408E for replacement thanks
View ArticleCan someone lead me to an appropriate diode for what should be a simple circuit?
I'm trying to put together a simple memory saver for use in cars. I know the idea is viable because I've seen versions of it. The basic automotive system consists of a 12 V battery and generally a...
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Relays keep killing my timer IC, how do i protect it?
I recently made this simple circuit to power a small DC motor as part of a power feed mechanism on a milling machine. It uses 2 DPDT relays to decide the polarity of the motor and I have that running...
View ArticleCommon types of diodes to keep around
I'm working on stocking my home workshop with frequently used parts so I can spend more time tinkering and less time watching my mailbox.What are the differences between different kinds of diodes? I've...
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What is the function of diode and capacitor in RS232 shifter circuit?
As shown in the picture, can anyone explain the capacitor and diode in detail?
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How do you solve for v_o in this clipper circuit?
Here is the circuit:I tried to solve it, but I am just not sure if my solution is correct.First I assumed that d2 is off for the positive half part of the cycle, then the circuit is simplified to...
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