Circuits & Schematics Maxim - 6

51. Circuit generates fan-speed control
    Circuits Automation Supply Maxim MAX6605 MAX4402 MAX6003,
    Fan noise is becoming a significant issue as electronic equipment increasingly enters the office and the home. Noise is proportional to fan speed, and the airflow hence, fan speed necessary for cooling is less at low ambient temperatures. Because ...
    Nov 12, 2020
52. LED dimmer uses only two lines
    Circuits Supply Maxim MAX5160
    EDN The circuit in Figure 1 provides 32 steps of brightness control from 0 to 100% for a backlight or instrument panel, using just two general-purpose-microprocessor signals. In addition, the circuit requires little board space, because it uses ...
    Oct 28, 2020

53. High-side current monitor operates at high voltage
    Circuits Measurement Supply Maxim MAX4172
    EDN The simplest technique for measuring current in an actuator or a motor is to monitor the ground current with a resistive element between the load and the ground. Because the device and its associated electronics share a ground potential, you ...
    Oct 26, 2020
54. Differential amp needs no power source
    Circuits Analogue Design Supply Amplifiers Maxim MAX319 ICL7614
    EDN A true-differential, power-source-free, high-input-impedance amplifier with bipolar output would present distinct advantages in remote devices. Such an amplifier, with its bipolar output, would be a better choice than a unipolar, 4- to 20-mA ...
    Oct 20, 2020
55. Rearranged reference helps ADC measure its own supply voltage
    Circuits Supply Maxim MAX6025 MAX1087
    EDN If you use an ADC to monitor a system's power-supply voltage, you may encounter situations in which the supply voltage exceeds the ADC's reference voltage (Figure 1). However, the ADC's input voltage cannot exceed its reference ...
    Sep 17, 2020
56. Simple circuit provides 5V gate bias from -48V
    Will Hadden
    Circuits Supply Maxim MAX6138 MAX1683
    A small and simple circuit derives 5 V from the 48 V rail that telecomm applications typically use (Figure 1). Useful for gate bias and other purposes, the 5 V supply delivers as much as 5-mA output current. A shunt reference, IC 1 , defines 5 V as ...
    Aug 26, 2020
57. Novel circuit isolates temperature sensor from its host
    Alfredo Saab
    Circuits Measurement Microcontrollers Usage Maxim MAX845 MAX6576
    Temperature sensors must sometimes operate at locations whose return potentials differ considerably from that of the data-acquisition system's common that is, equipotential ground. In consequence, the temperature sensor's support circuitry ...
    Jun 23, 2020
58. Two-wire interface has galvanic isolation
    Circuits Maxim MAX253 MAX517 MAX845
    Minh-Tam Nguyen, Maxim Integrated EDN Unlike the four-wire SPI, QSPI, and Microwire data-interface standards, I 2 C and SBBus buses require only two wires for data transmission, because they send and receive over the same wire. The circuit in ...
    Feb 23, 2020
59. Circuit Removes Relay-Contact Bounce
    John Guy
    Circuits Analogue Design Maxim MAX5902
    Advances in semiconductor technology have allowed ICs to replace many mechanical relays, but relays still dominate in high-current circuits that must stand off high voltages of arbitrary polarity. Contact bounce in those relays, however, can prove ...
    Jan 31, 2020
60. Nonvolatile digital potentiometer gates logic signal
    Circuits Maxim MAX5527
    Reinhardt Wagner, Maxim Integrated Products EDN This Design Idea describes a simple alternative to a nonvolatile gating function you typically implement using PAL (programmable-array logic), GAL (gate-array logic), or a CPLD ...
    Oct 1, 2019

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