Signal-strength display to an FM
... antenna connection to the audio out-put. External components include one tunable LC circuit for the local oscillator,a few capacitors,two resistors,and a potentiometer to control the variable-capacitance-diode tuning. The IC has an FLL (frequency-locked-loop) structure. The filtered output of the FM ...
... antenna connection to the audio out-put. External components include one tunable LC circuit for the local oscillator,a few capacitors,two resistors,and a potentiometer to control the variable-capacitance-diode tuning. The IC has an FLL (frequency-locked-loop) structure. The filtered output of the FM ...
14-1 A Highly Reconfigurable 400
... sigma-delta (SD) A/D. An input RF signal is down-converted to baseband using a passive mixer within a second-order SD A/D. The SD A/D is built using a passive switched-capacitor filter circuit and is run at a clock rate equal to the center frequency of the RF signal (fLO). The system is able to capt ...
... sigma-delta (SD) A/D. An input RF signal is down-converted to baseband using a passive mixer within a second-order SD A/D. The SD A/D is built using a passive switched-capacitor filter circuit and is run at a clock rate equal to the center frequency of the RF signal (fLO). The system is able to capt ...
1 GHz Counter
... frequency range of 70 MHz to 1 GHz, has high input sensitivity and good harmonic suppression. With lower sensitivity it's usable down to 3 MHz. The circuit comprises an input amplifier, a divider stage and an output stage. The divider stage may oscillate during no-signal conditions but this oscillat ...
... frequency range of 70 MHz to 1 GHz, has high input sensitivity and good harmonic suppression. With lower sensitivity it's usable down to 3 MHz. The circuit comprises an input amplifier, a divider stage and an output stage. The divider stage may oscillate during no-signal conditions but this oscillat ...
Basic electronic units and circuits Voltage divider The simplest basic
... FET (Field Effect Transistor) The controlling voltage sets the thickness of the empty layer, which can be seen in a diode. Changing the cross section area of a conductor can be used to regulate the current. The great advantage of the FET is that, practically, there is no current on the controlling e ...
... FET (Field Effect Transistor) The controlling voltage sets the thickness of the empty layer, which can be seen in a diode. Changing the cross section area of a conductor can be used to regulate the current. The great advantage of the FET is that, practically, there is no current on the controlling e ...
Electronics_exercises_files/extra 2
... SUGGESTED EXERCISES 3 Problem 1 The bias circuit below is used in a design with VG=5V and RS=1kΩ. For an enhancement MOSFET with kn’(W/L) =2mA/V2, the source voltage was measured and found to be 2V. What must Vt be for this device? If a device for which Vt is 0.5V less is used, what does Vs become? ...
... SUGGESTED EXERCISES 3 Problem 1 The bias circuit below is used in a design with VG=5V and RS=1kΩ. For an enhancement MOSFET with kn’(W/L) =2mA/V2, the source voltage was measured and found to be 2V. What must Vt be for this device? If a device for which Vt is 0.5V less is used, what does Vs become? ...
Final Exam W0809
... You MUST attempt Q.1 (soft skill component) . For Q.2-Q.7, answer any FOUR questions. Fill in the Table below indicating the answers that the instructor need to mark. If you do not fill in the Table, the instructor will mark your answers according to his discretions Show all steps clearly in neat an ...
... You MUST attempt Q.1 (soft skill component) . For Q.2-Q.7, answer any FOUR questions. Fill in the Table below indicating the answers that the instructor need to mark. If you do not fill in the Table, the instructor will mark your answers according to his discretions Show all steps clearly in neat an ...
receivers OF RADIO and TV broadcastING systems
... Most radios are hardware defined with little or no software control; they are fixed in function for mostly consumer items for broadcast reception. They have a short life and are designed to be discarded and replaced. ...
... Most radios are hardware defined with little or no software control; they are fixed in function for mostly consumer items for broadcast reception. They have a short life and are designed to be discarded and replaced. ...
don`t replace your garage door opener to get rid of
... • Crystal Controlled • Low supply voltage, highest reliability, low power drain • Single Channel Receiver ...
... • Crystal Controlled • Low supply voltage, highest reliability, low power drain • Single Channel Receiver ...
Building a 2 Transistor Data Radio
... the antenna down to an intermediate frequency (IF) at which the detector can operate. This reduces the amount of oscillator energy present at the desired frequency at the antenna. It does not completely eliminate the energy, as the autodyne will translate some of the IF frequency back up to the ante ...
... the antenna down to an intermediate frequency (IF) at which the detector can operate. This reduces the amount of oscillator energy present at the desired frequency at the antenna. It does not completely eliminate the energy, as the autodyne will translate some of the IF frequency back up to the ante ...
Experiment11-RC PHASE-SHIFT OSCILLATORS
... Başkent University Department of Electrical and Electronics Engineering EEM 311 Electronics II Experiment 11 RC PHASE-SHIFT OSCILLATORS Theory Oscillator circuits can be built using opamps with feedback to phase-shift the output signal by 180º. Phase-shift: In a phase-shift oscillator, as shown in F ...
... Başkent University Department of Electrical and Electronics Engineering EEM 311 Electronics II Experiment 11 RC PHASE-SHIFT OSCILLATORS Theory Oscillator circuits can be built using opamps with feedback to phase-shift the output signal by 180º. Phase-shift: In a phase-shift oscillator, as shown in F ...
TDA7000 FM Radio IC - Bowood Electronics
... The TDA7000 is a monolithic integrated circuit for mono FM portable radios. The IC has an FLL (Frequency-Locked-Loop) system with an intermediate frequency of 70 kHz. The i.f. selectivity is obtained by active RC filters. The only function which needs alignment is the resonant circuit for the oscill ...
... The TDA7000 is a monolithic integrated circuit for mono FM portable radios. The IC has an FLL (Frequency-Locked-Loop) system with an intermediate frequency of 70 kHz. The i.f. selectivity is obtained by active RC filters. The only function which needs alignment is the resonant circuit for the oscill ...
Design of a Regenerative Receiver for the Short-Wave - Inictel-UNI
... Frequency Oscillator). Conditions for the latter will be met as long as the oscillation conserves its integrity, i.e., its amplitude and frequency. In other words, it must not be related in any way to the SSB signal impressed on the tank circuit by a passing radio wave. No frequency-pulling effect s ...
... Frequency Oscillator). Conditions for the latter will be met as long as the oscillation conserves its integrity, i.e., its amplitude and frequency. In other words, it must not be related in any way to the SSB signal impressed on the tank circuit by a passing radio wave. No frequency-pulling effect s ...
AM Receiver - Profe Saul
... BC109C transistors in my prototype.The tuned circuit is designed for medium wave. I used a ferrite rod and tuning capacitor from an old radio which tuned from approximately 550 - 1600kHz. Q1 and Q2 form a compund transistor pair featuring high gain and very high input impedance. This is necessary so ...
... BC109C transistors in my prototype.The tuned circuit is designed for medium wave. I used a ferrite rod and tuning capacitor from an old radio which tuned from approximately 550 - 1600kHz. Q1 and Q2 form a compund transistor pair featuring high gain and very high input impedance. This is necessary so ...
Chapter 2. Active Filter Design
... Chapter 2. 5. A piece of communication equipment has two stages of amplification with gains of 40 and 60 and two loss stages with attenuation factor of 0.03 and 0.075. The output voltage is 2.2 V. What are the overall gain (or attenuation) and the input voltage? 21. What circuit Q is required to giv ...
... Chapter 2. 5. A piece of communication equipment has two stages of amplification with gains of 40 and 60 and two loss stages with attenuation factor of 0.03 and 0.075. The output voltage is 2.2 V. What are the overall gain (or attenuation) and the input voltage? 21. What circuit Q is required to giv ...
Physics 4700 HOMEWORK III Due Feb 23
... 3) Show that the RMS current in the 1 kΩ resistor is 6.5 mA. If the AC voltage source was replaced by a battery what would the current in the resistor be? ...
... 3) Show that the RMS current in the 1 kΩ resistor is 6.5 mA. If the AC voltage source was replaced by a battery what would the current in the resistor be? ...
Regenerative circuit
The regenerative circuit (or regen) allows an electronic signal to be amplified many times by the same active device. It consists of an amplifying vacuum tube or transistor with its output connected to its input through a feedback loop, providing positive feedback. This circuit was widely used in radio receivers, called regenerative receivers, between 1915 and World War II. The regenerative receiver was invented in 1912 and patented in 1914 by American electrical engineer Edwin Armstrong when he was an undergraduate at Columbia University. Due partly to its tendency to radiate interference, by the 1930s the regenerative receiver was superseded by other receiver designs, the TRF and superheterodyne receivers and became obsolete, but regeneration (now called positive feedback) is widely used in other areas of electronics, such as in oscillators and active filters. A receiver circuit that used regeneration in a more complicated way to achieve even higher amplification, the superregenerative receiver, was invented by Armstrong in 1922. It was never widely used in general receivers, but due to its small parts count is used in a few specialized low data rate applications, such as garage door openers, wireless networking devices, walkie-talkies and toys.