Position: Index > Oscillator Circuit >
  • LF Crystal Controlled Oscillator

    2016-08-18 07:30:4660

    The RF engineer sometimes has to look for an instrument that will check a low frequency quartz crystal unit reliably and rapidly. This is a difficult p...

  • RF driver audio oscillator

    2016-08-18 07:23:1859

    As shown, 555 and Rl, RPl, C1 and other components form controllable audio oscillator, f = 1.44 / (R1 +2 RP1) C1, the frequency of parameter in the dia...

  • Parallel-mode aperiodic crystal oscillator

    2016-08-18 07:11:3859

    The crystal is placed between the collector of the output stage and the base of the input stage. The frequency of oscillation can be set to a precise v...

  • Time_sequencer_using_ECG955M_timer_oscillator_chips

    2016-08-18 06:55:3459

    Time sequencer using ECG955M timer/oscillator chips. The first timer is started by momentarily connecting pin 2 to ground. It runs for 10 ms, then trig...

  • ISOLATION_OSCILLATOR

    2016-08-18 05:53:2960

    Used to isolate duty-cycle generator induction heater control system from pulser of power oscillator.-R.E.Mathews and F. R. Siad, Jr., Testing Space Cr...

  • Synchronized clock oscillator circuit diagram

    2016-08-18 04:43:1659

    As shownin the figure, the controlled multivibrator iscomposed of 555 and R1, R2, C1, and the oscillation frequency is related to the RC time constant ...

  • NE602_LOCAL_OSCILLATOR_CIRCUITS

    2016-08-18 04:18:3459

    The local oscillator for the NE602 can take the form of either a crystal-controlled (a through d) or a resonant-tank circuit(e and )....

  • CRYSTAL_OSCILLATOR_PROVIDES_LOW_NOISE

    2016-08-18 04:16:3759

    The oscillator delivers an output of high spectral purity without any substantial sacrifice of the usual stability of a crystal oscillator. The crystal...

  • OSCILLATOR_CLOCK_GENERATOR_

    2016-08-18 03:47:2859

    This self-starting fixed frequency oscillator circuit gives excellent frequency stability. R1 and C1 comprise the frequency determining network while R...

  • Simple Colpitts Oscillator circuit

    2016-08-18 03:21:1059

    The Colpitts Oscillator is characterised by tapping the mid-point of the capacitive side of the oscillator section. The inductor can be the primary sid...

  • Crystal oscillator Circuit composed of 555

    2016-08-18 01:58:3359

    With the composition of a 555 circuit, a quartz crystal oscillator circuit can be formed. As shown in the figure 3-7, after jointing point A and point ...

  • QUADRATURE_OSCILLATOR_USES_MULTI

    2016-08-18 01:14:5260

    PLIERS-4214 differential multipliers eliminate need for opamps in quadrature oscillator in which frequency is controlled by external DC voltage. R3, R4...

  • Colpitts Crystal Oscillator (2N3904)

    2016-08-18 00:02:0560

    This article describes the Colpitts Crystal Oscillator (2N3904). The content is very simple, very helpful. Components in this article can help you unde...

  • The PLL synthesized oscillator circuit diagram

    2016-08-17 23:59:1559

    PLL synthesizer oscillator circuit is a feedback loop composed of reference oscillator, phase comparator, loop filter, voltage controlled oscillator, p...

  • Colpitts harmonic oscillator 100Mhz

    2016-08-17 23:34:1359

    L1C1 are selected to be resonant at a frequency below the desired crystal harmonic but above the crystal`s next lower odd harmonic. C2 should have a va...

  • Gated 1Khz Oscillator (Normally On) Circuit

    2016-08-17 22:26:3061

    This gated 1-kHz oscillator offers press-to-turn-off operation, A, and waveforms at the output of pin 3 and across CI, B. Reprinted Url Of This Article...

  • YELP_OSCILLATOR

    2016-08-17 19:35:3259

    Close the pushbutton switch and the circuit starts the siren up-shifting to a higher frequency. Release it and the tone slides down until S2 is closed ...

  • Quartz crystal rectangular wave oscillator circuit

    2016-08-17 19:06:2361

    The quartz crystal rectangular wave oscillator circuit is mainly used in the new digital system clock-pulse generator. When the quartz crystal of this ...

  • CONSTANT_OUTPUT_OSCILLATOR

    2016-08-17 19:04:2959

    Used with automatic doppler cycle counter to determine position and velocity of missiles and satellites. Output signal amplitude is maintained constant...

  • PRACTICE_OSCILLATOR

    2016-08-17 18:57:5759

    Simple design provides for adjustment of both volume and tone.-Circuits, 73 Magazine, July 1974, p 81....

  • CRYSTAL_OSCILLATOR_WITH_ADJUSTABLE_FREQUENCY

    2016-08-17 18:18:5559

    In this crystal oscillator circuit, C3 adjusts the frequency of the oscillator for exact netting. The crystal is a fundamental type. C1= 100 pF and C2 ...

  • High-performance quadrature sine wave type oscillator circui

    2016-08-17 18:06:2959

    Many RC oscillators use the advanced circuits in the phase shift unit. They use the voltage feedback amplifier, and the gain of the voltage feedback am...

  • Simple_clock_oscillators

    2016-08-17 17:52:5560

    These circuits show four basic clock oscillators composed of digital IC gates, and a discrete-component oscillator, all of which are well suited as clo...

  • NE602_OVERTONE_ORYSTAL_OSCILLATOR

    2016-08-17 17:50:0459

    For higher frequencies, use an overtone crystal oscillator like the one shown here. The circuit is a Butler oscillator. The overtone crystal is connect...

  • 455_kHz_OSCILLATOR

    2016-08-17 17:40:0759

    The 455-kHz oscillator circuit uses a field-effect transistor (FET)for Q1. The output signal is taken from the source circuit of Q1. T1 is a 455-kHz IF...

  • PRECISION_GATED_OSCILLATOR

    2016-08-17 17:38:4759

    A 1-kHz gated oscillator with no long turn-on cycle is shown. R2, R3, and D1 preset the voltage on tuning capacitor C1 to 1/3 of the supply voltage....

  • STABLE_START_STOP_OSCILLATOR

    2016-08-17 16:08:4459

    Oscillators that generate a predetermined number of pulses are often required in applications such as video work. This oscillator starts 13 ms after th...

  • PLL Oscillator

    2016-08-17 15:17:4659

    PLL Oscillator This PLL was first published in March 1983 in Free Radio Magazine and was re-published a year later in the same magazine. It uses the we...

  • FEEDBACK_OSCILLATOR

    2016-08-17 14:12:3159

    C1 provides positive feedback between amplifier V2 and cathode follower V1, causing oscillation at frequency and amplitude at which loop gain is unity....

  • 330Mhz Crystal Oscillator

    2016-08-17 12:33:0660

    A /xPC 1651G IC operates in the fundamental mode with an experimental crystal at 330 MHz. The 56-to-270 pF capac itor is not critical; about 1-dBm RF o...

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