1-2Mhz broadcast transmitter
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Rf-Type Battery Charger Circuit
This type of charger transfers RF energy from an inductor (L2) to an external pickup coil. The pickup coil is connected to a rectifier and a battery that requires charging. This design is advantageous as it eliminates the need for...
Interfaces For The Remote-Control Transmitter Circuit
Several possible interface circuits are presented for use with a remote-control transmitter. The circuit labeled A demonstrates a typical FM stereo MUX decoder with a load connected directly to the open-collector output of a TA7343 PLL. The circuit labeled B...
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...
Precision tandem type power supply circuit diagram
The circuit depicted features a secondary N3 center tap transformer (T) with a common point connecting diodes VD2 and VD3 to positive electrodes, along with capacitors C2, C6, C7, and negative electrodes connected to capacitors C9 and C10. Additional components...
Electric oven circuit
The circuit operates by activating switch SA1, which powers a 220V transformer that converts AC voltage to DC through a bridge rectifier, supplying power to the computer control panel. The temperature for cooking food is set on this control panel,...
Closed-Loop Automatic Power Control for RF Applications
This is a circuit for Closed-Loop Automatic Power Control for RF Applications. The circuit utilizes a log detector (AD8318) and a variable gain amplifier (VGA) (ADL5330).
The Closed-Loop Automatic Power Control (APC) circuit is designed to maintain a consistent output power...
4-18Mhz-converter
The unit consists of an RF amplifier Q1, a local oscillator Q2, and a mixer Q3. The two frequency bands are covered without a band switch by utilizing an intermediate frequency (IF) of 3.5 MHz. The oscillator operates within a...
1-2 MHz radio transmitter circuit diagram
A circuit diagram of the T1 is a low-impedance output transformer, featuring a 5000-8 ohm resistor.
The T1 low-impedance output transformer is designed to match the output of audio amplifiers to the impedance of loudspeakers, ensuring optimal power transfer and minimal...
LED RF Signal Strength Meter
RF Signal Strength Meter circuits are popular RF measurement devices. This circuit is one of the simplest but very useful circuits that satisfies your desired accuracy. The heart of measurement is high accuracy but easy to use Logarithmic Detector AD8313...