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LOGARITHMIC_AMPLIFIER_1

Published:2009/6/23 2:51:00 Author:Jessie

LOGARITHMIC_AMPLIFIER_1
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WIDEBAND_UNITY_GAIN_INVERTING_AMPLIFIER_IN_A_75_OHM_SYSTEM

Published:2009/6/23 2:49:00 Author:Jessie

WIDEBAND_UNITY_GAIN_INVERTING_AMPLIFIER_IN_A_75_OHM_SYSTEM
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INVERTING_AMPLIFIER__WITH_BALANCING_CIRCUIT_

Published:2009/6/23 2:13:00 Author:May

INVERTING_AMPLIFIER__WITH_BALANCING_CIRCUIT_
Req may be zero or equal to parallel combination of R1 and R2 for minimum offset.   (View)

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×1000_AMPLIFIER_CIRCUIT

Published:2009/6/23 2:11:00 Author:May

×1000_AMPLIFIER_CIRCUIT
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AMPLIFIER_COOL_DOWN_CIRCUIT_I

Published:2009/6/23 2:25:00 Author:Jessie

AMPLIFIER_COOL_DOWN_CIRCUIT_I
This cool-down relay circuit uses an IC timer to drive a relay, which keeps the blower on for a time delay from timer U3. The value of C2 can be changed to lengthen or shorten the time, as needed.   (View)

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COMPLEMENTARY_OR_BILATERAL_ac_EMITTER_FOLLOWER_CIRCUIT

Published:2009/6/23 2:20:00 Author:Jessie

COMPLEMENTARY_OR_BILATERAL_ac_EMITTER_FOLLOWER_CIRCUIT
This noninverting circuit uses a pair of com-plementary npn (2N3904) and pnp (2N3906) transistors.   (View)

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LOGARITHMIC_AMPLIFIER

Published:2009/6/23 1:59:00 Author:May

LOGARITHMIC_AMPLIFIER
Unusual frequency compensation gives this logarithmic converter a 100 μs time constant from 1 mA down to 100 μA, increasing from 200 μs to 200 ms from 10 nA to 10 pA. Optional bias current compensation can give 10 pA resolution from - 55 ℃ to 100 ℃, Scale factor is 1 V/decade and temperature compensated.   (View)

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VOLTAGE_CONTROLLED_VARIABLE_GAIN_AMPLIFIER

Published:2009/6/23 1:56:00 Author:May

VOLTAGE_CONTROLLED_VARIABLE_GAIN_AMPLIFIER
The tee attenuator provides for optimum dynamic linear range attenuation up to 100 dB, even at f = 10.7 MHz with proper layout.   (View)

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UNITY_GAIN_FOLLOWER

Published:2009/6/23 1:55:00 Author:May

UNITY_GAIN_FOLLOWER
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HIGH_IMPEDANCE_DIFFERENTIAL_AMPLIFIER

Published:2009/6/23 1:54:00 Author:May

HIGH_IMPEDANCE_DIFFERENTIAL_AMPLIFIER
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500_ksps_8_CHANNEL_DATA_DCQUISITION_CIRCUT

Published:2009/6/23 2:10:00 Author:Jessie

500_ksps_8_CHANNEL_DATA_DCQUISITION_CIRCUT
The high input impedance of the LTC1278 allows multiplexing without abuffer amplifier. Both sin-gle channel and multiplexed high-speed data acquisition systems benefit from the LTC1278/LTC1279's dynamic conversion performance. The 1.6-μs and 1.4-μs conversion and 200-ns and 180-ns S/H acquisition times enable the LTC1278/LTC1279 to convert a 500 ksps and 600 ksps, respectively. The figure shows a 500-ksps 8-channel data acquisition system. The LTC1278's high input impedance eliminates the need for a buffer amplifier between the multiplexer's output and the Adc's input.   (View)

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PROGRAMMABLE_GAIN_NONINVERTINGAMPLIFIER_WITH_SELECTABLE_INPUTS

Published:2009/6/23 2:08:00 Author:Jessie

PROGRAMMABLE_GAIN_NONINVERTINGAMPLIFIER_WITH_SELECTABLE_INPUTS
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ABSOLUTE_VALUE_AMPLIFIER

Published:2009/6/23 2:07:00 Author:Jessie

ABSOLUTE_VALUE_AMPLIFIER
The circuit generates a positive output voltage for either polarity of input. For positive signals, it acts as a noninverting amplifier and effective. The accuracy is poor for input voltages under 1 V, but for less stringernt applications, it can ve effective.   (View)

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VOLTAGE_CONTROLLED_AMPLIFIER

Published:2009/6/23 2:04:00 Author:Jessie

VOLTAGE_CONTROLLED_AMPLIFIER
This circuit is basically an op amp with an extra input at pin 5. A current Ltac is injected into this input and this controls the gain of the device linerly. Thus by inserting an audio signal (±10 mV) between pin 2 and 3 and by controlling the current on pin 5, the level of the signal output (pin 6) is controlled.   (View)

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PRECISION_PROCESS_CONTROL_INTERFACE

Published:2009/6/23 2:03:00 Author:Jessie

PRECISION_PROCESS_CONTROL_INTERFACE
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DISCRETE_CURRENT_BOOSTER

Published:2009/6/23 2:02:00 Author:Jessie

DISCRETE_CURRENT_BOOSTER
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VOLTAGE_CONTROLLED_VARIABLE_GAIN_AMPLIFIER_1

Published:2009/6/23 2:01:00 Author:Jessie

VOLTAGE_CONTROLLED_VARIABLE_GAIN_AMPLIFIER_1
The 2N5457 acts as a voltage variable resistor with an Rds(on) of 800 ohms max. Since the differential voltage on the LM101 is in the low mV range, the 2N5457 JFET will have linear resistance over several decades of resistance providing an excellent electronic gain control.   (View)

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PREAMP_TRANSMIT_RECEIVE_SEQUENCER

Published:2009/6/23 1:41:00 Author:Jessie

PREAMP_TRANSMIT_RECEIVE_SEQUENCER
This circuit is useful in amateur radio VHF and UHF work where a mast-mounted antenna preamp is used for receiving. The kit controls T-R switching and change-over relay sequencing so that high RE levels are prevented from accidentally being applied to the preamplifier during switching intervals.   (View)

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Adjustable Rate Constant Sinusoidal Frequency Oscillator Circuit

Published:2011/7/18 5:40:00 Author:Felicity | Keyword: Adjustable Rate Constant, Sinusoidal Frequency Oscillator, Circuit

Adjustable Rate Constant Sinusoidal Frequency Oscillator Circuit
Adjustable Rate Constant Sinusoidal Frequency Oscillator Circuit
Adjustable Rate Constant Sinusoidal Frequency Oscillator Circuit

Adjustable Rate Constant Sinusoidal Frequency Oscillator Circuit is showed in the picture above.   (View)

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CURRENT_REGULATOR_OP_AMP

Published:2009/6/22 23:35:00 Author:May

CURRENT_REGULATOR_OP_AMP
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