vco circuit diagram
#VCO
#voltage controlled oscillator
#frequency modulation
#signal generator
#RF
#analog circuits
#electronic design
#waveform generation
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Signal Generator circuit
The output level was set to 3.8V peak to peak. The initial objective was to compare several different operational amplifiers (op-amps) before further optimizing the circuit. The op-amps evaluated were the TL072, LM4562, and OPA2134. The distortion spectra are presented...
LM359 Voltage Controlled Oscillator
A phase-locked loop (PLL) is widely utilized in telecommunications, control systems, and various other electronic applications. PLLs can be employed to demodulate frequency-modulated (FM) signals and generate a stable output frequency.
A phase-locked loop is an essential feedback control system that...
2 channel RF remote control
The basic small-range remote controls are Infrared and RF (Radio Frequency). One of the weaknesses of Infrared is that the signal cannot pass through walls. Therefore, to control a garage door, an RF remote control is necessary. The circuit (transmitter...
RF communication use a sample circuit(example in AVR)
Even including labor, the actual cost of purchasing, stocking, assembly, assembly errors, more expensive PCBs (with additional holes and larger sizes), and the increased difficulty in tuning would likely result in significantly higher expenses.
The analysis of costs associated with electronic...
Simple RF Power Meter
Many beginners trying out their skill with QRP TX for the first time have to overcome many problems before they are able to come on the air. One usual complaint is that everything is working fine, but the signal is...
LINEAR VCO
This voltage-controlled oscillator (VCO) utilizes an LF356 operational amplifier to generate a linear frequency versus voltage characteristic in conjunction with the CMOS HC4046. The frequency range can be adjusted by modifying the capacitor linked between pins 6 and 7 of...
Radio harmonic detection circuit
The demodulation and detection circuit is a radio AM intermediate frequency (IF) signal amplifier that performs two-stage detection using diode Dr. It extracts the audio signal from the IF carrier detection and subsequently sends it to the power amplifier stage....
1.2GHz Voltage Controlled Oscillator With Linear Modulation
High-frequency voltage-controlled oscillators (VCOs) are challenging to construct. Maxim has developed an integrated 1.2 GHz oscillator, the MAX2754. The center frequency is adjustable via the TUNE input, while a linear modulation input enables frequency modulation. This integrated circuit (IC) is...
RF Circuitry Links
The 7th overtone of 18 MHz (17m) is 144 MHz (2m) directly within the CW region. Icarus is a high-altitude balloon (HAB) project funded by advertising revenue, which has successfully launched numerous balloons that captured impressive photographs. Robert Harrison is...