Circuits & Schematics: frequency - 6

51. JFET Follower Amplifier Cancels Distortion
    Dimitri Danyuk
    Circuits Analogue Design ON Semiconductor BC850 BC860
    .. value of R S changes also. Because of regenerative feedback, the capacitive load of Q3’s emitter will lead to high-frequency peaking inside the loop. So the load capacitance is isolated with R5, and some kind of frequency ...
    Dec 24, 2019

52. Use A DAC To Bias Your Varactor Diode
    Circuits Wireless Radio
    .. Lawton, Microchip Technology Varactor (or “varicap”) diodes are used primarily in radio-frequency (RF) circuits to provide a capacitance that can be varied by changing the applied voltage. These types ...
    Feb 29, 2012

53. mini Logic analyzer on AVR Microcontroller
    Circuits Measurement Microcontrollers Usage
    .. and many more electronic components. This circuit supports capturing for up to 400 kHz digital signals. Features Capturing frequency - 400 kHz Logic inputs voltage - up to +5 V Power supply - Maximum 4.8V DC (4 x 1.2V recharchable ...
    Feb 26, 2012
54. Simple Interface Connects Sensor Output To Microcontroller
    Shyam Tiwari
    Circuits Microcontrollers Usage
    .. 5.1 or 3.3 V depending on the logic level required) and capacitor C1. Capacitor C2 is optional and only used for high-frequency noise suppression with sensors having low-frequency signal outputs. The Zener diode serves two purposes ...
    Feb 23, 2012
55. Understanding amplifier power ratings. RMS power. DIN power. PMPO (Peak Music Power). Speaker power ratings. Methods for making 4 ohm speaker to appear as 8 ohm. Dampling factor. What is amplifier "bridging" or "monoblocking"?
    Circuits Audio Measurement
    .. 268-5 specify not pink noise, but pink noise filtered by a filter that provides sinificant attenuation in the low and high frequency region of the spectrum to more closely model the long-term spectral distribution of music. Pink noise ...
    Sep 4, 2005
56. Minimize Input-Supply Ripple Current In LED Driver Applications
    Circuits Supply Light Intersil EL7801
    .. applications use a microprocessor or a microcontroller, it's very easy to generate a rectangular pulse of specified frequency, amplitude, and duty cycle. If you apply this pulse-width modulation (PWM) signal to the EN pin, you ...
    Jul 4, 2020
57. Enablement of Batteryless Applications with Wireless Power
    Circuits Supply Analog Devices LTC3588-1 LTC4123 LTC4124 LTC4126 LTC6992-1
    .. 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 ratio of f LC_TX ...
    Jul 11, 2020
58. Low-noise ac amplifier has digital control of gain and bandwidth
    Philip Karantzalis
    Circuits Analogue Design Audio Analog Devices LT1884 LTC6910-1
    .. circuit. Inside the integrator's feedback path, the gain of a second PGA (Gain B) multiplies the integrator's 3-dB frequency, thus providing bandwidth control. Figure 1. This ac-amplifier configuration offers both gain and ...
    Sep 5, 2020
59. Build a charge pump with ultralow quiescent current
    Circuits Supply Maxim MAX981 MAX4685
    .. 301 kΩ. Capacitor C 3 connects to the comparator’s IN input. Along with R 1 and R 2 , C 3 sets the oscillation frequency according to the following simplified relationships: and where t PERIOD = t LOW + t HIGH . To maximize ...
    Nov 22, 2020
60. Logic Probe has a wide voltage range
    Peter Demchenko
    Circuits Measurement Texas Instruments SN74HC132 SN74HC14
    .. or bad contact). It also features a counter, which is very handy when you want to count impulses, to estimate the value of frequency or to test an interface. (This part is shown as a sketch.) The probe in Figure 1 consists of two ...
    Mar 7, 2024

Sort by: relevance / date