Amplifier Circuit

DIFFERENTIAL_VERTICAL_AMPLIFIER

Published:2009/7/10 22:36:00 Author:May

Uses two RCA 40841 dual-gate FETs invertical inputstage of solid-state oscilloscope,with gates of each connected in single-gate configuration.Circuit is designed for frequencies up to 500 MHz. Wide dynamic range permits handling of large signals、Mithout overloading．- Linear Integrated Circuits and MOS/FET's' RCA SolidState Division,Somerville,NJ,1977,p 435-436.   (View)

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ELECTROSTATIC_DEFLECTION_AMPLIFIER

Published:2009/7/10 22:35:00 Author:May

Circuit develops equal-amplitude but opposite-polarity sawtooth outputs when sawtooth input is applied to gates of Q1 and Q2. al is connected as common-source amplifier for applying opposite-polarity sawtooth to gate of Q3.Polarity at output of Q3 then becomes same as that of input, increased to amplitude suitable for deflction plates of CRT. Sawtooth at output of Q2 has opposite polarity. Circuit values are chosen to balance gain so both outputs have same magnitude.-E. M. Noll, FET Principles, Experiments, and Projects, Howard W. Sams, lndianapolis, IN, 2nd Ed., 1975, p 229-230.   (View)

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DEFLECTION_PLATE_AMPLIFIEB

Published:2009/7/10 22:34:00 Author:May

Resistive colllector network of symmetrical differentrial amplifieris replaced by constant-current source to improve slew rate of deflection amplifier driving capacitive load such as deflection plates of electrostatic cathode-ray tube.Q1 and Q2 are idetical current sources,Network Q1-CR1-Q7-R6-R8 forms current source for Q1, Q7, is used as 6.2-V zener diode,－W Peterson,Current Sources lmprove Amplifier Slew Rate,EEE Magazine, Nov,1970、p102.   (View)

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Norton_amplifier_with_a_negative_supply

Published:2009/7/17 4:13:00 Author:Jessie

This circuit uses one section of an LM3900 to form an ac amplifier with a negative power supply. The dc biasing current, I, is established by the negative supply voltage through R3, and provides a very stable output-quiescent point for the amplifier. National Semiconductor, Linear Applications Handbook 1991 p 221   (View)

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Norton_amplifier_with_high_input_impedance_and_high_gain

Published:2009/7/17 4:14:00 Author:Jessie

This circuit uses one section of an LM3900 to form an ac amplifier with both high input impedance (1 MΩ) and high gain (100). National Semiconductor, Linear Applications Handbook 1991 p 221.   (View)

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Norton_precision_comparator

Published:2009/7/17 4:46:00 Author:Jessie

This circuit uses two sections of an LM3900 to form a precision comparator. The current established by VREF at the (-) input of amplifier 1 causes Q1 to adjust VA. The value of VA causes an equal current to flow into the (+) input of amplifier 2. This current corresponds more exactly to the reference current of amplifier 1 National Semiconductor, Linear Applications Handbook 1991 p 244.   (View)

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30_MHz_video_amplifier_using_an_MC1552G

Published:2009/7/17 4:44:00 Author:Jessie

30 MHz video amplifier using an MC1552G.Set R to 1 K for a voltage gain of 55(courtesy Motorola semiconductor Products Inc.).   (View)

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TELEPHONE_SPEAKER_AMPLIFIER

Published:2009/7/10 22:14:00 Author:May

This simple telephone amplifier (which can be switched off for privacy) allows everyone in the room to listen to your telephone conversations.   (View)

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Norton_noninverting_low_voltage_comparator

Published:2009/7/17 4:44:00 Author:Jessie

This circuit uses one section of an LM3900 to form a noninverting comparator. The circuit can compare voltages between zero and 1V, as well as large negative voltages. When working with negative voltages, the current supplied by the common-mode network must be large enough to satisfy both the current-drain demands of the input voltages, and the bias-current requirements of the amplifier. National Semiconductor, Linear Applications Handbook 1991 p. 243   (View)

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Wide_band_video_amplifier_using_an_ECG915_operational_amplifier_with_75_ohm_coax_drive_capability

Published:2009/7/17 4:44:00 Author:Jessie

Wide-band video amplifier using an ECG915 operational amplifier with 75-ohm coax drive capability (courtesy GTE Sylvania Incorporated).   (View)

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SUMMING_CHOPPING_AMPLIFIER

Published:2009/7/10 22:09:00 Author:May

D-c operational amplioer is connected as summing amplifier with two inputs. Input-output rela-tionship is independent of ampliier charac.teristics because amplifer gcdn is sufficienlly high and effects of d.c drift in transistor circults are sufficienlly small. D-c and low-fre-quency components are amplifier in chopper amplifier and integrating ampliler, while high-frequency a-c components go through preamplifier.The two signals are combined and further boosted by power omplifier. In togretting section has time constant of 12 sec determined by C2-R3.-W. Hochwald and F.H. Gerhard, D-C Operational Amplifier With Transistor Chopper, Electronics, 32;17, p 94-96.   (View)

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Video_switch

Published:2009/7/17 4:42:00 Author:Jessie

Video switch. With a logic one at pin 1 the amplifier is turned on (courtesy Motorola Semiconductor Products Inc.).   (View)

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Video_amplifier_with_AGC_using_an_MC1553_wide_band_amplifier

Published:2009/7/17 4:42:00 Author:Jessie

Video amplifier with AGC using an MC1553 wide-band amplifier (courtesy Motorola Semiconductor Products Inc.).   (View)

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Video_amplifier_with_AGC_using_an_MC1552_1553_wide_band_amplifier

Published:2009/7/17 4:41:00 Author:Jessie

Video amplifier with AGC using an MC1552/1553 wide-band amplifier (courtesy Motorola Semiconductor Products Inc.).   (View)

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ELECTROSTATIC_DEFLECTIO_AMPLIFIER

Published:2009/7/10 22:03:00 Author:May

Combines frequency response of cascode am pilfer with linearity of long-tailed pair fed by constant current, Adjust R for 3 mA through each load resistor. Output transistors require small heatsinks.-G. A Johnston, Deflection Amplifier, Wireless World, Nov. 1973, p 560.   (View)

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Norton_AND_gate_and_NAND_gate_with_high_fan_in

Published:2009/7/17 4:41:00 Author:Jessie

This circuit uses one section of an LM3900 to form a multiple-input AND gate, with an input-diode network that is similar to that of DTL. Interchange the inputs to form a NAND gate. National Semiconductor, Linear Applications Handbook 1991 p 240   (View)

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HYBRID_D_C_OPERATIONAL_AMPLIFIER

Published:2009/7/10 22:02:00 Author:May

Uses Goldberg chopper-stabilized principle for d-c drift correction. D-c gain is 900,000, input impedance 230,000 ohms, and output impedance 1,000 ohms. Generates -20 to +20v.across 10,000-ohm load at 0 to 800 cps.-R. L.Konigsberg, Designing Hybrid D.C Amplifiers to Withstand Missile Environments, Electronics,34:32, p157-159.   (View)

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Video_amplifier_with_AGC_using_an_MC1552

Published:2009/7/17 4:39:00 Author:Jessie

Video amplifier with AGC using an MC1552(courtesy Motorola semiconductor Products Inc.).   (View)

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Video_amplifier_using_an_MC1590

Published:2009/7/17 4:39:00 Author:Jessie

Video amplifier using an MC1590(courtesy Motorola Semiconductor Products Inc.).   (View)

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Norton_AND_gate_and_NAND_gate_with_high_fan_out

Published:2009/7/17 4:38:00 Author:Jessie

This circuit uses one section of an LM3900 to form a three-input AND gate with a fan out of 50. One of the 24-kΩ resistors and R2 can be omitted to form a two-input AND gate. Interchange the inputs to form a NAND gate. National semiconductor, Linear Applications Handbook 1991 p 240.   (View)

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