Circuits & Schematics Measurement: oscilloscope - 4

31. Delay line upgrades vintage scope
    Circuits Measurement Analog Devices AD8055
    .. pretrigger information. Figure 1 shows the components you need to implement these improvements on a Philips PM3230 10-MHz oscilloscope. The components are a wideband amplifier to restore the signal to its original level and provide ...
    07-12-2021

32. Input buffer and attenuator for sound card oscilloscopes extends low-end frequency response
    Circuits Measurement Texas Instruments TLV9051
    .. advent of inexpensive standardized 16- and 24-bit audio I/O hardware for personal computers inspired a rush of oscilloscope simulating applications. Many of these “Sound Card Scopes” are quite capable, ...
    15-02-2022

33. Instrumentation Amplifier Extends DSO
    Circuits Analogue Design Measurement Analog Devices AD620
    .. An ammeter showed that the current transitions occurred too quickly for visual logging, and my managers had requested an oscilloscope photo of the current waveform's peaks. I rolled out our company's cart-mounted DSO ...
    05-04-2022
34. A simple ratiometric technique for measurement of very low resistances
    Circuits Measurement Microchip TC4422A
    .. The measurements needed to calculate accurate resistance values can be obtained from the outputs V1 V2 using an ordinary oscilloscope or, instead, a pulse peak voltmeter, which can provide higher precision. The circuit uses the ...
    11-08-2022
35. Wideband peak detector operates over wide input-frequency range
    Circuits Analogue Design Measurement Texas Instruments LM6171 TL084
    .. 0.9 0.2 0.5 0.5 4 1.8 31.6 % error (6 V p-p input) 0 0.4 1.1 1.7 0.1 0.2 13.3 20.7 This circuit used a 300-MHz-bandwidth oscilloscope to make the performance measurements. As a result, the data in Table 1 may include some ...
    14-09-2022
36. Analog Peak Detector Frames Mechanical Bounce, Quantifies Contact Resistance
    Circuits Analogue Design Measurement Texas Instruments LF411 LM324 LM358
    .. the bounce has subsided, it allows very accurate contact-resistance measurements. This band-limited process requires no oscilloscope, time delays, or filtering. It also automatically quantifies the mechanical-noise activities. ...
    25-11-2022
37. RF-telemetry transmitter features minimal parts count
    Circuits Wireless Measurement Analog Devices LTC1250
    .. square waves with a 50%-duty-cycle ratio (traces 2 and 3, respectively, in Figure 2) that drive the bridge. Figure 2. This oscilloscope photo shows circuit’s internal waveforms: Trace 1 is the integrator’s output voltage, ...
    13-02-2023
38. Bipolar (AC) input V-F converter
    Circuits Measurement Analog Devices LT1004 LT1011 LT1056 LT1102 LTC201A
    .. amplifier outputs. Start-up or overdrive conditions could cause this loop to latch. A start-up mechanism, adapted from oscilloscope trigger circuitry, precludes latch-up. If C1 charges past the point where C2 can reset it, loop ...
    24-04-2023
39. Laser simulator helps avoid destroyed diodes
    Circuits Measurement Laser Supply
    .. you can connect an LED in series with the I L lead to provide a visual indication of circuit operation. Connecting an oscilloscope across R 1 allows monitoring laser-drive and modulation currents. (In this context, ...
    27-07-2023
40. Low power voltage-to-frequency converter makes a wireless probe for testing an inductive power supply
    Circuits Wireless Measurement Supply Texas Instruments LMC7211
    .. comparator's output delivers a PPM signal having a relatively short pulse of approximately 320 µsec. Figure 2. Oscilloscope measurements of the VFC show voltage across capacitor C 5 (upper trace) and comparator IC 2 ...
    03-08-2023

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