Questions tagged [voltage-amplification]

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1answer
80 views

Amplification of Bolometer

How would one measure the microvolts change in a 50kΩ Bolometer, as a result of the radiation impinging on it?
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1answer
81 views

Is a solid state relay with over 1 MHz driving frequency physically possible?

I could only find one question semi-relatable to mine on SE, but I have a more demanding application in mind. I have designed a 32 stage 40 VAC -> 1000 VDC Cockroft-Walton voltage multiplier which ...
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2answers
56 views

Voltage Amplifier - Using a

I am looking to build a DC voltage amplifier. In this picture, I am using a 2N3904 NPN transistors. Does this work as a DC voltage amplifier? Does it make sense? If this doesn't work, how do I make ...
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1answer
59 views

Alternative ways to step up voltage?

I want to drive an EOM crystal at 20 MHz for phase modulation. I recently bought a step up RF transformer (1:4 turns ratio), but it's not working fine above 2 MHz. I tried winding a transformer myself ...
1
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0answers
59 views

Amplification problem

I am using an instrumentation amplifier AD620ANalong with another amplifier TL084CN in series. Both have gains of 100 which essential for me since the input is in microvolt range. The frequency is 87 ...
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0answers
26 views

Voltage conversion between multiple orders [duplicate]

I have this circuit in which I want to convert the input voltage of micro order to volt. The circuit image has been posted. I have figured out the bandpass filter ( basically everything after the big ...
1
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3answers
557 views

Conversion from microvolt to volt [closed]

I have a circuit which has an input of voltage of the order of micro. I want to convert it into volt order. I am using an instrumentation amplifier AD620 with gain of 1000 to first convert it into ...
0
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1answer
180 views

Amplifier with true ground output swing and A/D conversion

I want to amplify a 0-20mV signal from a sensor to 0-2.048V in order to feed it to an ADC (with a reference voltage of 2.048V). After I will input the digital signal to a microcontroller. I need to be ...
-2
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2answers
341 views

Gain of a feedback amplifier with base to collector resistor [closed]

I'm able to solve this problem using the concept of Miller resisitance however I'm having an issue solving this problem using the concept of feedback amplifiers. Can someone help me solve this problem ...
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2answers
165 views

Non inverting OpAmp with NPN amplification factor > 1

I need to amplify the output range of a DAC chip from (0-3.3 V) to (0-10 V). Unfortunately, I cannot simply use an inverting OpAmp circuit, because the output needs to stay positive with respect to ...
1
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2answers
164 views

Amplifying signal with Darlington not working

I'm relatively new to electronics and this is not my usual field of work. For a bigger project I need to read a flow sensor's (Biotech FCH-C-PA-N) output. The output needs to be processed by an ...
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4answers
420 views

Can capacitors amplify signals?

While reading a topic on opamps, I came across this topic. It said, other devices like capacitors amplify signals differently for different frequencies, while opamps amplify signals irrespective of ...
2
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2answers
356 views

High Frequency Capacitors in Differential Amplifier

I am curious about the function of two capacitors near differential transistor pair amplifier. The circuit picture is cut out of one of Pioneer's audio amplifiers. This amplifier is basically ...
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3answers
459 views

Distortion Elimination with Differential Transistor Pair

Most of you know that incorporation of negative feedback within amplifier is one of major considerations when designing a hi-fi amplifier. Till now, I have only dealt with differential transistor pair ...