Questions tagged [negative-resistance]
The negative-resistance tag has no usage guidance.
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Why can't the following configuration be considered negative feedback?
In the following circuit I have kept the resistor ratio such that beta factor of negative terminal (part of output will come on inverting terminal by voltage division), is higher than that of positive ...
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How does a signal get amplified? [closed]
Say I send an analog electric signal through a telephone wire. If that wire is long enough then the resistance will eventually make the amplitude of the signal close to zero. How do electric signals ...
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Creating a circuit with negative differential resistance
Is it possible to construct a circuit with negative differential resistance by only using components that have no negative differential resistance (e.g., resistors, diodes, BJTs, etc)?
If possible, ...
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Using tunnel diode to cancel out armature resistance
Can we use tunnel diodes to cancel out armature resistance?
A tunnel diode when it is in its negative differential region under DC shifted AC(AC with some DC offset) and if the Vp-p of the AC is very ...
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NIC network circuit with grounded output?
My class was given a series of circuit networks to calculate the transmission of the system. One of those networks is this type of Negative Impedance Converter with the common ground output.
How can I ...
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Powering a negative resistance converter with an Arduino power pin
I want to build a negative resistance converter and the only voltage source I have is a 5 V Arduino power pin.
I am afraid the reverse current (Is) flowing through the power pin will destroy my ...
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1
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Compensate potentiometer wiper resistance with negative resistance (LM358)
I'm trying to cancel wiper resistance of a 10 kΩ DiGiPot that controls output voltage of a switching power supply. I'm using MCP4131-103 that has 120 Ω wiper resistance @0% pot position. This wiper ...
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How to add a voltage control to this frequency dependent negative resistor circuit?
I would like to control the filter frequency with a control voltage. I assume that resistors R17,18,19 and 24 must be replaced with a adequate sub circuit. Could someone advice me where should I start ...
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Negative resistance - crystal
Why do we have the negative resistance concept in a crystal?
How does the crystal exhibit negative resistance?
I've read this Link and it seems to say that the amplifier is the one that causes the ...
user220456
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4
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0 current in a circuit using tunnel diode
Suppose we have a diode with negative differential resistance of -40 ohm in the region of 0.3-0.5 V and we put it in parallel with a 40 ohm resistor:
simulate this circuit – Schematic created ...
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Why does this negative impedance converter (NIC) circuit work in an LTspice simulation but not in an actual circuit?
I've been trying to invert the phase response of a non-inverting low pass filter by using a "negative resistor" (-5000 ohms,) which is achieved by the simulation below (bode plot + circuit):
...
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Magical uses of tunnel diodes
I am studying the working principle of tunnel diode and I am reading for a voltage range it creates a negative differential resistance.
If we have a current source supplying the circuit with some ...
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Negative resistance in a regenerative radio receiver?
Why is an amplifier with a tuned circuit and positive feedback, such as a regenerative radio receiver, said to exhibit or have negative resistance?
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How to make/describe an element with negative resistance of minus 1 Ohm?
How do I make/describe an element with negative resistance of minus 1 Ohm?
It's I–V characteristic should then be
\$I = -U\$
Is this possible?
I need exactly what I wrote. No compromises. The ...
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Circuit LTspice implementation not working
I stumbled upon on Chua circuit and tried to implement it LTspice.
This was allegedly supposed to be a double scroll, however upon simulating it in LTspice I achieve a different result.
Here you can ...
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