Circuits & Schematics: Design - 4

31. Simple RC Cars - Single channel Transmitters and Super Regenerative Receivers at 27 MHz and 49 MHz
    Circuits RC Modeling
    .. is the 9 volt GS transmitter which does not use a crystal. This clever design allows only two transistors to generate both the carrier and and the modulation. Shown below at 27MHz 40MHz ...
    Mar 8, 2005

32. Simple Interface Connects Sensor Output To Microcontroller
    Shyam Tiwari
    Circuits Microcontrollers Usage
    .. that need transistor-transistor logic (TTL) or CMOS signals, which can make such sensors difficult to use. This design (see the figure) provides a simple solution to the interface problem when the sensor uses an NPN output stage ...
    Feb 23, 2012

33. Op Amp Linearizes Attenuator Control Response
    Mike Irwin
    Circuits Analogue Design Analog Devices SSM2164
    .. 10 to 20 mV when you sweep the gain through a 70-dB range. The noise and distortion performance is excellent, because the design uses the gain cells in the standard configuration in the SSM2164 data sheet. Materials on the topic Datasheet ...
    Jun 30, 2020
34. Minimize Input-Supply Ripple Current In LED Driver Applications
    Circuits Supply Light Intersil EL7801
    .. Godil Electronic Design Consumer-based LED applications have really taken off. You now find them in home lighting, airplane cabin ...
    Jul 4, 2020
35. Enablement of Batteryless Applications with Wireless Power
    Circuits Supply Analog Devices LTC3588-1 LTC4123 LTC4124 LTC4126 LTC6992-1
    .. side, a simple open-loop wireless transmitter based on the LTC6992 TimerBlox® silicon oscillator is used. For this design, the drive frequency is set at 216 kHz, which is below the LC tank resonant frequency of 266 kHz. The exact ...
    Jul 11, 2020
36. Inverting buck-boost converter regulates LED current
    John Betten
    Circuits Supply Light Texas Instruments TPS40200D
    .. buck-boost converter. These topologies generally require a large number of components, increasing the materials cost of the design. Although most experts consider these choices acceptable, the converters provide positive output voltages. A ...
    Jul 5, 2020
37. Fault-Protected Current Limiter Keeps Its Cool
    Anthony Smith
    Circuits
    .. effective current limiting and protection for the pass transistor. Figure 1. The traditional two-terminal current limiter design (shaded area) can suffer from excessive power dissipation in case of a shorted load, but adding a few ...
    Nov 7, 2013
38. Short DC Power-Line Pulses Afford Remote Control
    Tom Hornak
    Circuits Supply Light Texas Instruments CD74HC14
    .. guarantees that the flip-flops' Reset does not release before V DD reaches its full value. Note that you can use this Design Idea in other applications. For example, if you omit the circuit in Figure 3, the transitions in V 3 and V 4 ...
    Nov 3, 2022
39. "Linear" PTC Thermistors Overcome NTC Temperature-Sensing Shortcomings
    Bill Schweber
    Circuits Analogue Design Measurement Texas Instruments TMP116 TMP61 TMP63 TMP64
    .. by eliminating the need for additional linearization circuitry or redundant NTC thermistors, these PTC thermistors simplify design, lower system cost and reduce printed-circuit-board (PCB) layout size by at least 33% when compared to NTC ...
    Jun 17, 2020
40. Dual Controller Provides 2 μs Step Response and 92% Efficiency for 1.5 V Rails
    Circuits Supply Power Linear Technology LTC3838
    .. Shriver, Linear Technology Design Note 505 Introduction The LTC®3838 is a dual output, dual phase buck controller that employs a controlled ...
    Oct 31, 2014

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