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AN951: Amplifying High-Impedence Sensors:
Photodiode Example: Microchip Application Note Published 8-Oct-04 (app note added 2/06) |
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App Note 10 - Op Amp Output Impedance:
Apex Microtechnology Corp App Note (added 6/06) |
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Audio-test accessory isolates and matches loads: 3/16/06
EDN Design Ideas / (added 10/06) This low-cost, switchable, dual-impedance transformation circuit comprises a single conventional transformer and two minimum-loss pads. |
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Bipolar current source maintains high output impedance at high frequencies:
12/5/2005 EDN Design Ideas / (added 05/07) Use line-receiver/amp ICs to build high-frequency constant-current sources. |
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Diminutive Impedance-Matching Splitters: Application Note
MiniCircuits.com (app note added 6/07) |
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Fast Current Feedback Amplifiers Tame Low Impedance
Loads: DN132 Design Notes (Linear Technology) (app note added 1/06) |
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Fixed attenuators help minimize impedance mismatches: AN-70-001
Application Note MiniCircuits.com (app note added 6/07) |
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High Input Impedance DC Summing Amplifier: Circuit Ideas for Designers
Application Notes Advanced Linear Devices, Inc. (app note added 6/06) |
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High Input Impedance Precision DC Summing Amplifier: Circuit Ideas for
Designers Application Notes Advanced Linear Devices, Inc. (app note added 6/06) |
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High Voltage Amplifier Drives Piezo Tubes: 12/07)/2004 EDN-Design
Ideas Piezoelectric tubular positioners that drive manipulators in scanning tunneling microscopes require high-voltage, low-current drive circuits. The circuit in Figure 1 can drive high-resistance, low-capacitance piezoelectric loads at a -3-dB bandwidth of 6 kHz.
It offers a low-cost alternative to commercial drivers. (added 10/05) |
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High-impedance buffer amplifier's input includes ESD protection:
9/28/2006 EDN Design Ideas / (added 05/07) Diodes and guard traces suppress high-voltage static-discharge transients. |
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High-impedance voltmeter: An ideal voltmeter has
infinite input impedance, meaning that it draws zero current from the circuit under test. This way, there will be no "impact" on the circuit as the voltage is being measured. The more current a voltmeter draws from the circuit under test, the more the measured voltage
will "sag" under the loading effect of the meter, like a tire-pressure gauge releasing air out of the tire being measured...(schematic added 6/07) |
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