circuit output

circuit output

Antennas : Tuners

• Z-Match Antenna Tuner project - This Z-Match is a link coupled all-band tuner. Two all band tank circuits cover 3-14mhz and 14-30mhz. The tank output links are selected with a very heavy duty SPDT rotary switch.
  [ Hits: 1173 | Votes: 0 | Rating: 0 ]

• TCube - TCUBE is a combination of a Spectrum Analyzer and a Two Tone Generator, with optional quadrature outputs. It can be used for measuring the intermodulation behavior of an audio circuit, and as a general purpose tool
  [ Hits: 8517 | Votes: 11 | Rating: 5.91 ]

• Zelscope  ^pop - Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.
  [ Hits: 71204 | Votes: 29 | Rating: 5.32 ]

• Building a Robust PL519 Tube HF Amplifier - his article explores the construction of a PL519 tube amplifier, utilizing Ulrich L. Rohde N1UL's insights. Focusing on a modest 25W continuous output, the design ensures robustness with forced air cooling. The detailed breakdown covers input matching, screen grid voltage generation, bias adjustment, anode power supply, heater power supply, and monitoring circuitry, providing valuable guidance for ham radio enthusiasts.
  [ Hits: 71 | Votes: 0 | Rating: 0 ]

• Negative feedback output circuit - Negative feedback is often referred to as shunt feedback in conjunction with emitter degeneration.
  [ Hits: 1106 | Votes: 1 | Rating: 10 ]

• How to Make an Automatic 12V Battery Charger - A home made battery charger 110-220 v AC providing from 1.25-24 v DC Adjustable at 8 Amps output power, with Short Circuit Protection Over Load and over charge Protection.
  [ Hits: 155 | Votes: 0 | Rating: 0 ]

• 70cm Beacon - PLL synthesized 70cm CW beacon exciter. The exciter is built arround a slightly more advanced ADF-4351 single chip PLL synthesizer rather then (among amateurs) more popular Si-570 or Si-5351 integrated circuits. The exciter is capable of providing up to 250 mW of RF output power,
  [ Hits: 131 | Votes: 1 | Rating: 10 ]

• RF Sampler - This circuit will let you look at the signal and frequency output of your transceiver.
  [ Hits: 722 | Votes: 1 | Rating: 10 ]

• A CW TX for 80 meters band - This simple circuit will give about 1.2 Watts of output when powered from a 13.8VDC supply.
  [ Hits: 1733 | Votes: 1 | Rating: 10 ]

• Antenna Noise and Signal Cancelling at LF - By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
  [ Hits: 7909 | Votes: 6 | Rating: 4.5 ]