Mutchus

The NE566 Function Generator is a Voltage-Controlled Oscillator of exceptional linearity with buf fered square wave and triangle wave outputs. The frequency of oscillation is determined by an external resistor and capacitor and the voltage applied to the control terminal. The Oscillator CAN be programmed over a ten-to-one frequency range by proper selection of an external resistance and modulated over a ten-to-one range by the control voltage, with exceptional linearity.  FMAX = 1 MHz     WIDE 1000:1 Continuous Sweep Possible  NE566 Function Generator Circuit Diagram Pdf Datasheet  Sourced by : Circuitsstream

Function of Each Part of D.C Generator A D.C Generator consists of the following parts: 1.        Yoke or magnetic frame 2.        Pole cores and pole shoes 3.        Field windings 4.        Brushes and brush holders 5.        End covers 6.        Armature core 7.        Armature winding 8.        Commutator 9.        Shaft Fig 1. DC Generaotor Parts 1.        Yoke or magnetic frame: The outer most frame is known as Yoke. It is made of high permeability material possessing sufficient mechanical strength. Cast iron is used in small machines and cast steel or rolled steel is employed in large machines. The Yoke serves two fold as:                  (...

One tool that I’ve been missing at my lab at home is function generator. They tend to be a bit expensive, so I haven’t bought one. I thought this might be a good opportunity to try and make one myself. I found a pretty common DDS (direct digital synthesis) chip, called AD9833. Then just strap a USB-enabled AVR micro there and maybe some analog electronics.   This board doesn’t do any of the special analog magic to allow for variable amplitude or offset for the signal. The output is fixed to 0-4v. I’m planning to make another completely analog board for adjusting amplitude and offset. [ ]

Sine wave is the Basic Input wave form for almost all amplifiers. Now we going to generate a sine wave of 1Khz Frequency and a peak to peak voltage of about 10V without using a signal generator. CIRCUIT DIAGRAM FOR SINE WAVE GENERATOR Components Required to wireup this circuit Q - BC107 R1 - 47KΩ R2 - 10KΩ R3 - 47KΩ R4 - 4.7KΩ Rc - 2.2KΩ Re - 680Ω Ce - 22μF C - 0.01μF Vcc - 12V OUTPUT WAVEFORM SINE WAVE GENERATOR Working of Sine wave Generator The circuit used here, is an RC Phase Shift Oscillator. It is an RC coupled Amplifier with an phase shifting network, the phase shifted output is again feedback to the input of transistor(base). We know that By BarkHausen Criteria, an amplifier will act as an oscillator if the phase shifting angle is multiple of 0, 360,........ Here the Resistors R3, R4 and Capacitors C helps to maintain a Phase shift and create oscillations.

A small audio test generator is very useful for quickly tracing a signal through an audio unit. Its main purpose is speed rather than refinement. A single sine-wave signal of about 1 kHz is normally all that is needed: distortion is not terribly important. It is, however, important that the unit does not draw too high a current. The generator described meets these modest requirements. It uses standard components, produces a signal of 899 Hz at an output level of 1 V r.m.s. and draws a current of only 20 µA. In theory, the low current drain would give a 9 V battery a life of 25,000 hours. The circuit is a traditional Wien bridge oscillator based on a Type TLC271 op amp. The frequency determining bridge is formed by C1, C2 and R1–R4. The two inputs of the op amp are held at half the supply voltage by dividers R3-R4 and R5-R6 respectively. Circuit diagram: Mini Audio Signal Generator Circuit Diagram Resistors R5 and R6 also form part of the feedback loop. The amplification is set to about...

This is a simple project of Programmable Pulse Generator Circuit Diagram. Fast rise and fall times require the use of high speed switching transistors for the differential pair, Q4 and Q5 Linear ramps and sine waves may be generated by the appropriate reference input. Programmable Pulse Generator Circuit Diagram

RF Generator 6 GHz Circuit Diagram. When we talk about high-frequency, everything seems to be difficult, a simple coil becomes a feat. Doing a search on the Internet found that generator "comb" (comb generator), which is a signal generator that produces multiple harmonics of your input signal. The appearance of the output on a spectrum analyzer resemble a comb, hence the name. Comb generators are simpler to build and seem to work well up to 1 GHz This generator I found surprised me because he was 6 GHz has a crystal oscillator 96 MHz (third overtone), capacitively coupled to a broadband amplifier using IC mar3 and capacitively coupled to a back-to-back diode set low capacitance PIN. According to the creator of this circuit was originally designed to produce a reference signal in the amateur radio band of 2.4 GHz, hence the 96.013 MHz crystal RF Generator 6 GHz Circuit Diagram

This regulator was designed for use with a  generator with a higher output voltage. This  type of generator can be found on some boats  and on vehicles for the emergency services.  They are really just an adapted version of the  standard alternator normally found in cars.  The field winding is connected to the 12 V  (or 24 V) battery supply, whereas the generator winding is configured for the AC grid  voltage (230 V or 115 V). This AC voltage now  has to be kept stable via the 12 V field winding. Although it’s perfectly possible to use a  switching regulator for this, we deliberately  chose to use the old and trusted 723. The generator is a three-phase type, with the  field winding rated for 12 VDC. The output voltage of the generator depends on its revs  and the current through the field winding.  Since the output voltage is relatively high, it  is fed via opto-couplers to the 723, which is  used in a standar...

This high voltage generator was designed  with the aim of testing the electrical break-down protection used on the railways. These  protection measures are used to ensure that  any external metal parts will never be at a  high voltage. If that were about to happen,  a very large current would flow (in the order  of kilo-amps), which causes the protection  to operate, creating a short circuit to ground effectively earthing the metal parts. This hap-pens when, for example, a lightning strike hits  the overhead line (or their supports) on the  railways.  This generator generates a high voltage of  1,000 V, but with an output current that is limited to few milliamps. This permits the electrical breakdown protection to be tested with-out it going into a short circuit state. The circuit uses common parts throughout: a  TL494 pulse-width modulator, several FETs or  bipolar switching transistors, a simple 1.4 VA  mains tran...

The RF sweep frequency generator (‘wobbu-lator’) published in the October 2008 issue of Elektor has a receiver option that allows the instrument to be used as a direct conversion receiver. This receiver does however have a noise floor of only –80 dBm, which really should have been –-107 dBm to obtain a sensitivity of 1 µV. So, for a good receiver sommore gain is required. A wideband amplifie however, generates a lot of additional noisas well and as a consequence will not resuin much of an improvement.  As an experiment, the author developed a selective receiver with a bandwidth of about 4 MHz. Because a gain of at least 35 dB is required, the preamplifier consists of two amplifying elements. The input amplifier is designed around a dual gate MOSFET, type BF982. This component produces relatively little noise but pro-vides a lot of gain. The output stage uses a BFR91A for some additional gain. Preamplifiers where both the gate and the drain are tuned often struggle with feedback via the...