Circuits & Schematics: metal detector - 5

41. High-speed peak detector uses ECL comparator
    Circuits Analogue Design Measurement Signal Processing, Filters Maxim MAX9690
    .. electronics designers often use peak-detector circuit sin such applications as amplitude measurement, automatic gain control, and data regeneration. ...
    09-11-2022

42. Protect MOSFETs in heavy-duty inductive switched-mode circuits
    Circuits Supply Power Analog Devices ADP3624
    .. of the current. You can check the peak voltage at load resistor R. D 1 and D 2 and storage capacitor C S function as a peak detector. The peak-voltage pulses at resistor R cause a dc voltage at C S of roughly the same value as the peak ...
    28-10-2022

43. Simple circuit shuts off system when supply voltage is low
    Circuits Supply Microchip LM4041
    .. “SOT-23” packages. IC1 is an LM4041 adjustable voltage reference that serves here as a programmable voltage detector. It does this by operating in an unconventional configuration. Typically, the LM4041 develops a voltage ...
    13-10-2022
44. Transistors tame perfidious leakage inductance
    Circuits Supply ON Semiconductor NCP1200 MTP3N60E
    .. plateau voltage, which is the value you’d like to obtain. With the rectifying diode playing the role of an envelope detector, the result is a final level close to 24 V, far from the 13.4 V you would expect. As a result, a possibly ...
    29-09-2022
45. Wideband peak detector operates over wide input-frequency range
    Circuits Analogue Design Measurement Texas Instruments LM6171 TL084
    .. Design Idea builds on a previous one ( Reference 1 ) to realize a precision peak detector with a bandwidth of 15 to 30 MHz or more, depending on the maximum input-signal level of your ...
    14-09-2022
46. Active Emulator Supports Multiple RTD Wiring, Sense Configurations
    Circuits Measurement ON Semiconductor BSS138
    .. running a formal test with multiple resistance temperature detector (RTD) sensors, it is often necessary to calibrate and debug a data-acquisition system to verify basic ...
    08-09-2022
47. Touch Switch Needs no DC Return Path
    Circuits Digital Texas Instruments CD40106B
    .. conduction into cutoff. An approximation of the square wave swinging from 0 to 12 V appears at Q 1 ’s drain. A peak detector circuit formed by D 1 , R 7 and C 4 provides sufficient dc voltage to force IC 1B ’s output to a ...
    31-08-2022
48. Flea Power Circuit Detects Short Circuits
    Circuits Analogue Design Measurement Maxim MAX777
    .. the voltage on R X (representing the DUT) with the voltage at the junction of R 3 and R 4 . Figure 1. This short-circuit detector uses little power, and provides low currents and voltages to avoid damage to the device under test. You ...
    03-08-2022
49. Continuity buzzer is frugal with power
    Circuits Measurement Texas Instruments OPA340 TLV2221
    .. continuity detector in Figure 1 is based on W Dijkstra’s “Fleapower circuit detects short circuits” ( ...
    28-07-2022
50. Circuit Forms Gamma-Photon Detector
    Circuits Measurement Maxim MAX4477 MAX987
    .. The most critical component is the PIN photodiode, whose selection often involves conflicting considerations. Detector sensitivity (the number of photons detected for a given radiation field), for example, depends on the ...
    18-07-2022

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