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Single Gate Relaxation Oscillator
2016-08-31 14:28:5678Below is a relaxation oscillator circuit using a 74HC14, an inverter with a Schmitt trigger input. Its mean that the transition point for an increasing...
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VARYING_FREQUENCY_OSCILLATOR
2016-08-31 12:01:55120Output frequency of alarm tone generator changes continuously. With suitable ampliler and loudspeaker, can easily be heard in noisy environments where ...
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Easy_tune_sine_wave_oscillator
2016-08-31 11:49:14119This circuit provides both sine- and square-wave outputs at frequencies from below 20 Hz to above 20 kHz, by varying R3. R8 sets amplitude.Distortion v...
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20Mhz-vhf-crystal-oscillator
2016-08-31 11:18:2898A typical circuit at 20 MHz is shown. The crystal, which has an internal series resistance Rs of 14ohm, oscillates at its third harmonic. The diode cla...
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The oscillator circuit diagram composed of crystal inverter
2016-08-31 10:48:01101In the circuit, crystal X ( 3.2MHz ) forms the oscillator circuit, after its oscillation output is connected to BCD counter CD4518, it will divide the ...
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OSCILLATOR_OUTPUT_STAGE
2016-08-31 10:11:2474Used with incremental-tuning precision R-C oscillator for testing and aligning equipment having sharp resonances. oscillator signal is fed through phas...
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TRANSDUCER_DRIVEN_CRYSTAL_OSCILLATOR
2016-08-31 10:10:5668Sensitive 70-Mc one-tube oscillator feeds local and remote tank circuits to which capacitive or inductive transducers may be connetted, for conversion ...
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TONE_BURST_OSCILLATOR_AND_DECODER
2016-08-31 09:42:5492A tone burst sent at the beginning of each transmission is decoded (at receiver) by a PLL causing output from pin 3 of logic gate to turn on carrier-op...
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20_MHz_VHF_CRYSTAL_OSCILLATOR
2016-08-31 09:38:5891A typical circuit at 20 MHz is shown. The crystal, which has an internal series resistance RS, of 14 Ω , oscillates at its third harmonic. The diode c...
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Comparator Based Crystal Oscillator
2016-08-31 07:51:1677Although a simple crystal oscillator may be built from one comparator of an LT1720/LT1721, this will suffer from a number of inherent shortcomings and ...
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74HC4060 14-stage binary ripple counter with oscillator
2016-08-31 07:47:30156there is one drawback of using these chips comparing to 8250 chips, as there is no Programmable Baud Rate Generator or any other means of changing spee...
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NE555N Timer Oscillator Circuits
2016-08-31 06:29:18157The NE555N is a highly stable controller capable of producing accurate timing pulses. With a monostable operation, the time delay is controlled by one ...
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CB_CRYSTAL_OSCILLATOR
2016-08-31 05:13:0295Uses low-cost crystal having high series resistance, up to 30 ohms. Provides adequate output to supply most master oscillator-power amplifier applicati...
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THREE_FREQUENCY_AUDIO_OSCILLATOR
2016-08-31 04:58:4990The full circuit diagram for the audio sine-wave generator is shown. Resistors R1 and R2 bias the noninverting (pin 3) input of IC1, and their parallel...
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TOUCH_OPERATED_CODE_PRACTICE_OSCILLATOR
2016-08-31 04:04:2886A touch-operated CPO is shown in the figure. The gates of IC1-a are biased high through the two 22-MΩ resistors (R1 and R2), keeping its output low. G...
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UNIVERSAL_TEST_OSCILLATOR
2016-08-31 03:39:2394Crystal is in feedback path of Pierce oscillator, between base and collector of al, with 2.5-mH RF choke in place of tuned collector circuit. Oscillato...
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How to Use VCO buffer for Isolating Oscillator Circuit
2016-08-31 03:34:18100The article herein describes information on howvoltage controlled oscillator (VCO) buffermay isolate oscillator circuits output problems. The VCO buffe...
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INDUCTION_HEATER_POWER_OSCILLATOR
2016-08-31 03:16:2771Circuit includes power supplies for oscillator and keyer bias.-R. E. Mathews and F. R.Sias, Jr., Testing Space Craft with Induction Heaters, Electronic...
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SIREN_OSCILLATOR
2016-08-31 02:38:3570A CD4093 chip and a few components make up a siren oscillator, which drives power MOSFET T1. A 4-Ω speaker is driven directly from this device. The si...
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Oscillator Buffers
2016-08-31 01:45:4475CMOS buffers added to an op amp oscillator improve performance, largely as a result of nonsymmetry and variability of th e op amp`s output saturation v...
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Wide-Range Crystal Oscillator Circuit
2016-08-31 01:12:0973A circuit using one 7400 TTL10 can use crystals of the fundamental type, from 1 to about 13 MHz. Output is rich in harmonics, making this oscillator us...
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Temperature_compensated_crystal_oscillator
2016-08-31 00:47:5581This circuit uses an LTC1043 to differentiate between a temperature-sensing network and a dc reference. The singla-ended output biases a varactortuned ...
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Synchronized_oscillator
2016-08-30 22:38:3579This circuit shows a line-synchronized oscillator that will not lose lock under noisy line conditions. The circuit is suited to applications that requi...
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Voltage-controlled oscillator circuit
2016-08-30 22:27:1486The voltage-controlled oscillator circuit is as shown in the figure. The input voltage range of the oscillator is 0-10V, the change sensitivity is 1kHz...
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Digitally_programmed_oscillator
2016-08-30 21:52:3980Digitally programmed oscillator. The circuit uses an AD537 monolithic V/F converter and an AD7520 multiplying D/A convener. It is a programmable square...
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CRYSTAL_OR_CAPACITOR_OSCILLATOR
2016-08-30 19:40:3181Gives high stability from 800 kc to 3 Mc, from 0 to 65℃ with either crystal or capacitor. Optimum operating frequency can be found and utilized by ch...
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STABLE_LOWFREQUENCY_CRYSTAL_OSCILLATOR
2016-08-30 19:38:5185Circuit Notes This Colpitts-crystal oscillator IS ideal forlow frequency crystal oscillator circuits。 Ex-cellent stability is assured because the 2N3...
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Multi-output crystal oscillator
2016-08-30 18:34:3976The chart shows the multi-output crystal oscillator. It is mainly composed of three gates of A1, four resistors, two capacitors and a crystal. Rl ~ R4 ...
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FET_PHASE_SHIFT_OSCILLATOR
2016-08-30 16:50:3886Frequency of four-mesh phase-shift oscillator can be varied several cycles around 10 cps, using 2.5-meg pot. Attenuation of four-mesh feedback network ...
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UJT_OSCILLATOR
2016-08-30 16:23:2567When power is connected to the circuit, C1 charges through R1 and R3. When the voltage reaches the UJT gate's (G) threshold voltage (usually around 0.5...
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