Circuits & Schematics: frequency - 7

61. Novel circuit isolates temperature sensor from its host
    Alfredo Saab
    Circuits Measurement Microcontrollers Usage Maxim MAX845 MAX6576
    .. at a rate of 10 µsec/K. User-selected scale factors range from 10 to 640 µsec/K. The complementary, fixed-frequency square-wave outputs of a power-transformer driver IC 1 , a Maxim MAX845 drive a Halo Electronics ...
    Jun 23, 2020

62. Simple Energy-Tripped Circuit Breaker with Automatic Delayed Retry
    Tim Regan
    Circuits Supply Linear Technology LT1999 LTC6994 LT6108
    .. 1 us to 33 sec. The delay time is controlled by the current sourced by the SET pin, which programs an internal oscillator frequency, while the bias voltage on the DIV pin selects a frequency divide ratio. The LT1783 op amp circuit ...
    Jul 15, 2020

63. Dual Controller Provides 2 μs Step Response and 92% Efficiency for 1.5 V Rails
    Circuits Supply Power Linear Technology LTC3838
    .. employs a controlled constant on-time, valley current mode architecture to provide fast load step response, high switching frequency and low duty cycle capability. The switching frequency range is 200 kHz to 2 MHz-its phase-locked loop ...
    Oct 31, 2014
64. Gnat-power sawtooth oscillator works on low supply voltages
    Circuits Oscillators TS12011 TS12012
    .. to low supply voltages. It could be used as the basis for a PWM control loop, a timer, or a VCO, or as a capacitance-to-frequency converter. It’s a nifty circuit for two reasons: It uses an open-drain comparator output to make ...
    Dec 19, 2013
65. Electronic Transformer for 12 V Halogen Lamp
    Circuits Supply Light STMicroelectronics
    .. of the circuit is the classic half-bridge. The control circuit could be realised using an IC (so fixing the operating frequency), but there is a more economical solution which consists of a selfoscillating circuit where the two ...
    May 7, 2007
66. XXI Century Sundial - Now for Arduino also
    Circuits Domestic Laser MCU Open-Source Platforms Microcontrollers Usage Arduino
    .. and should be readable and modifiable as desired in any case a few comments follow. #define F_CPU 2457600UL // crystal frequency #define PWM_TOP F_CPU/60 // == 40960 is TOP count for timer 0 (goes into OCR0A) These pre-compiler ...
    Jun 10, 2009
67. Inexpensive Peak Detector Requires Few Components
    Anthony Smith
    Circuits Analogue Design Texas Instruments TLC372 LM358
    .. the difference between peak signal levels and output voltage for three peak levels illustrates the detector’s frequency response. Because the comparator's feedback path includes op amp IC 2A , offsets and errors that IC ...
    Jul 25, 2020
68. Simple PC thermometer
    Circuits Measurement Computers and Peripherals
    .. I wrote small Delphi application. For details, see source. First press Calibrate button to calibrate timing procedure. The frequency of your processor will be shown. Then select COM port and press Open port. At the end you can finally ...
    Mar 17, 2008
69. Wireless Power User Guide
    Circuits Wireless Supply Application Notes Linear Technology LTC4120
    .. Note 138 October 2013 Trevor Barcelo An inductive wireless power system consists of a transmitter that generates a high frequency alternating magnetic field and a receiver that collects power from that field. The resonant coupled ...
    Nov 7, 2013
70. Electronic kit 2 x 35 W (RMS) Hybrid Stereo Power Amplifier with Power Supply (solder kit)
    Circuits Audio CK290
    .. V AC: Music power 2 x 55 W / 4 Oh RMS power 2 x 35 W / 4 Ohm Includes volume and balance controls Maximum distortion: 0.2% Frequency response: 30 Hz to 30 KHz PC board dimensions: 4-3/4L x 2-1/8W x 2-3/4H You can buy this electronic kit ...
    Aug 19, 2007

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