Reducing high frequency ground currents to zero
... The conventional wisdom and standard practice of grounding electrical circuits to “physical earth” for safety (per the National Electrical Safety Code) began over 100 years ago. The past few decades have brought technological innovations such as the VFDs mentioned above. Equipments such as UPS’s, se ...
... The conventional wisdom and standard practice of grounding electrical circuits to “physical earth” for safety (per the National Electrical Safety Code) began over 100 years ago. The past few decades have brought technological innovations such as the VFDs mentioned above. Equipments such as UPS’s, se ...
Voltage/Frequency Control of an Induction Motor Using
... From the results it is clear that it is possible to implement the v/f control for induction motor using FPGA as controller. The FPGA is programmed to produce sine triangle PWM. The firmware code is verified by using Modelsim simulator and the results are noticed. The pulses are verified from CRO bef ...
... From the results it is clear that it is possible to implement the v/f control for induction motor using FPGA as controller. The FPGA is programmed to produce sine triangle PWM. The firmware code is verified by using Modelsim simulator and the results are noticed. The pulses are verified from CRO bef ...
fm receiver kit - ABRA Electronics
... BLOCK 2 - RECOVERING THE DATA Theory of Operation In dealing with FM receivers, there are some terms that must be defined. First, let’s determine the term deviation as the frequency swing of the incoming FM signal. When no modulation is present, the incoming signal is a fixed frequency carrier wave ...
... BLOCK 2 - RECOVERING THE DATA Theory of Operation In dealing with FM receivers, there are some terms that must be defined. First, let’s determine the term deviation as the frequency swing of the incoming FM signal. When no modulation is present, the incoming signal is a fixed frequency carrier wave ...
Our Friend the Direct Box
... Impedance matching is essential for quiet and undistorted reproduction of audio signals. A condition called loading will come into play when high impedance signals are injected into low impedance inputs. Loading manifests itself as a noticeable increase in hum and noise, as well as signal loss. Loss ...
... Impedance matching is essential for quiet and undistorted reproduction of audio signals. A condition called loading will come into play when high impedance signals are injected into low impedance inputs. Loading manifests itself as a noticeable increase in hum and noise, as well as signal loss. Loss ...
10 GHz, Class-B, 0.5 V, 130 nm CMOS Cross
... close to (class-B) or below (class-C) a threshold voltage. As a result, while in steady-state, active devices in the oscillator core stay “on” for shorter time during each period than during start-up [1], and RMS power necessary to operate the oscillator decreases. The described method is not obviou ...
... close to (class-B) or below (class-C) a threshold voltage. As a result, while in steady-state, active devices in the oscillator core stay “on” for shorter time during each period than during start-up [1], and RMS power necessary to operate the oscillator decreases. The described method is not obviou ...
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A Wide-Range Oscillator For Audio And Supersonsonic Frequencies
... frequency response characteristics on amplifiers, telephone lincs, filters , etc. Extremely rapid "spot checks," at frequencies exactly one dcetl.de apart., arc possible owing to the decade switching feature. The wide frequency span, extc.ndi ng well into tbe ultrasonic range, is useful in checking ...
... frequency response characteristics on amplifiers, telephone lincs, filters , etc. Extremely rapid "spot checks," at frequencies exactly one dcetl.de apart., arc possible owing to the decade switching feature. The wide frequency span, extc.ndi ng well into tbe ultrasonic range, is useful in checking ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... processor, and the second line enters the clock regenerator in receiver. Before entering the data processor in receiver, demodulation process of AM signal yields data signal. The signal from AM-demodulation usually weak, distorted and noisy, the signal processor circuit will overcome the problems, a ...
... processor, and the second line enters the clock regenerator in receiver. Before entering the data processor in receiver, demodulation process of AM signal yields data signal. The signal from AM-demodulation usually weak, distorted and noisy, the signal processor circuit will overcome the problems, a ...
electron spin resonance - University of Toronto Physics
... where is the gyromagnetic ratio. You may show that if an electron is a uniform sphere with homogeneous charge distribution, one expects to be e/2m. Real electrons have a larger magnetic moment than this simple model predicts, and the discrepancy is often written in terms of the Lande ...
... where is the gyromagnetic ratio. You may show that if an electron is a uniform sphere with homogeneous charge distribution, one expects to be e/2m. Real electrons have a larger magnetic moment than this simple model predicts, and the discrepancy is often written in terms of the Lande ...
OP-AMP Filter Examples
... OP-AMP Filter Examples: The two examples below show how adding a capacitor can change a non-inverting amplifiers frequency response. If the capacitor is removed you're left with a standard non-inverting amplifier with a gain of 10 (1 + R2/R1). Recall that the capacitors impedance depends on frequenc ...
... OP-AMP Filter Examples: The two examples below show how adding a capacitor can change a non-inverting amplifiers frequency response. If the capacitor is removed you're left with a standard non-inverting amplifier with a gain of 10 (1 + R2/R1). Recall that the capacitors impedance depends on frequenc ...
20/1
... iii. What is the pole frequency of the common gate (cascodes) 3AB? iv. What is the unity gain frequency? v. What is the phase margin? 2. To increase the positive output swing of the previous amplifier, a. redraw the PMOS current mirror M4AB, M5AB as a high-swing cascode current mirror, as in Figure ...
... iii. What is the pole frequency of the common gate (cascodes) 3AB? iv. What is the unity gain frequency? v. What is the phase margin? 2. To increase the positive output swing of the previous amplifier, a. redraw the PMOS current mirror M4AB, M5AB as a high-swing cascode current mirror, as in Figure ...
To Get a Perfect “A”…
... The output sine wave is very clean and precise. The output frequency is surprisingly close to the ideal frequency that was designed for. (plus or minus 5Hz) ...
... The output sine wave is very clean and precise. The output frequency is surprisingly close to the ideal frequency that was designed for. (plus or minus 5Hz) ...
Experiment 6: Frequency Modulation (FM), Generation and Detection
... The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC filter to result in ...
... The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC filter to result in ...
EL5102, EL5103, EL5202, EL5203, EL5302
... 2. Standard NTSC signal = 286mVP-P, f = 3.58MHz, as VIN is swept from 0.6V to 1.314V.RL is DC coupled. 3. Disable/Enable time is defined as the time from when the logic signal is applied to the ENABLE pin to when the supply current has reached half ...
... 2. Standard NTSC signal = 286mVP-P, f = 3.58MHz, as VIN is swept from 0.6V to 1.314V.RL is DC coupled. 3. Disable/Enable time is defined as the time from when the logic signal is applied to the ENABLE pin to when the supply current has reached half ...
Chapter3: Signal conditioning
... Eg. A platinum resistance temperature sensor has a resistance of 100 ohm at 0 0C is placed in one arm of a Wheatstone bridge with each of the other arms also being 100 ohm. If the resistance temperature coefficient of the platinum is 0.0039/K, find the output voltage from the bridge per degree chang ...
... Eg. A platinum resistance temperature sensor has a resistance of 100 ohm at 0 0C is placed in one arm of a Wheatstone bridge with each of the other arms also being 100 ohm. If the resistance temperature coefficient of the platinum is 0.0039/K, find the output voltage from the bridge per degree chang ...
Experiment No. 6 Frequency Modulation (FM
... phototransistor. The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC fil ...
... phototransistor. The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC fil ...
Tech Short 16 - Detectors and Discriminators
... detection, including cathode-coupled triode mixers, balanced mixers and pentagrid converter circuits. Eddystone used a pentagrid circuit in many of their receiver designs, which combined both the carrier reinsertion oscillator and mixer in a single stage. An example of this circuit is shown at the b ...
... detection, including cathode-coupled triode mixers, balanced mixers and pentagrid converter circuits. Eddystone used a pentagrid circuit in many of their receiver designs, which combined both the carrier reinsertion oscillator and mixer in a single stage. An example of this circuit is shown at the b ...
Heterodyne
Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.