Posts Tagged ‘Pre-Amplifier’
LM1201 Video Amplifier with Balanced (Bi-Phase) Output
This is a schematic diagram of video amplifier circuit with bi-phase output. Bi-phase output provides both positive-going and negative-going signal, and can be used as balanced signaling. The main component of this circuit is LM1201. In this circuit, the inverted video is obtained at pin 10 because of the 75Ω termination to the power supply …[Read More]
30-Khz Bandwidth High Linearity Opto-Isolated Amplifier
Using optocoupler to directly transfer a linear (analog) voltage would produce a large unpredictable linearity error, which is also sensitive to temperature changes. By using frequency modulation, the total system’s linearity will depend only on the linearity of the V/F and F/V converter, which is fortunately cancel each other if we use similar devices with …[Read More]
The schematic diagram shown below is a wide-band buffer circuit. This circuit is formed by FET and transistor. This circuit consist of series-feedback buffer which act as wideband unity-gain amplifier. This wideband unity-gain amplifier has high input impedance due to the low input impedance of 2N5485 FET. Here is the schematic diagram of the circuit: …[Read More]
Instrumentation Amplifier with CMRR Calibration
Common mode rejection ratio (CMMR) is one parameter that specify the instrumentation performance. LM4250 is high performance op-amp which is characterized by very low power consumption. With special arrangement as shown in the following schematic diagram, the instrumentation amplifier circuit will be featured with calibration to maximize the CMMR performance.
53 dB Stereo Preamp for Tape or Phonographs
With the circuit shown in the following schematic diagram, both channels of this stereo preamp is constructed using RCA CA3052 quad AC amplifier. this pre-amplifier circuit is featured with tone control (bass – treble). Make a similar circuit to complete the other channel, since the circuit for left and right channel are similar. To be …[Read More]
Fast Amplifier Circuit with DC Stabilization
This amplifier circuit combines the LT1010 and a fast discrete stage with an LT1008 based dc stabilizing loop. A differential stage which is single-ends into the LT1010 is formed by Q1 and Q2. An output of 1 V pk-pk into a typical 75-Ω video load is delivered by the circuit. With gain = 2, the …[Read More]
Pre-Amplifier Circuit for Oscilloscope
An oscilloscope amplifier with 20 dB voltage gain is provided by this circuit with a frequency range from 0.5 to 50 MHz. By increasing the value of the 0.05 uF capacitor or try removing the capacitor, we can extend the low frequency response of this circuit. A particularly small level of input noise is delivered …[Read More]
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