Microphone compressor using two transistors
Microphone compressor using two transistors This microphone compressor circuit utilizes a two-stage amplification design for dynamic range control. Initially, the…
Tag: circuits
Simple mic compressor using 3 Transistors for HF rigs
Simple mic compressor using 3 Transistors is a effective, compressor circuit that can be used to improve the dynamic range…
Circuits – 40M tag QRP Transmitter
Here is another qrp cw transmitter pulled out from SPRAT back issues, which is simple to build with commonly available…
Circuits – Simple zener diode tester
Simple zener diode tester Ever found yourself with a handful of zener diodes, wondering if they’re still good or what…
Circuits – Offset tuning indicator for CW
An NE567 tone decoder, tuned to the transceiver`s CW offset frequency, ensures that the transceiver will be transmitting on the…
Circuits – Simple tester checks LCDs
Manufacturers of electronic equipment use LCDs for calculators, watches, mini-videogames, and pagers, for example. In comparison with LED-based displays,which consume…
Circuits – White LED Torch
This white led torch circuit provides an effective solution for powering white LEDs. It is ideal for flashlights, emergency lighting,…
Circuits – Dark Room Timer
The Dark Room Timer circuit described here provides a pleasant musical tone in your darkroom at 1-second intervals. The circuit…
Circuits – Check Digital Or Linear Circuits With The Flick Of A Switch
A simple logic probe in concert with a signal source can be used to check digital as well as linear…
MAX2633 based VHF Preamplifier using for entire VHF band
Here is a high performance RF amplifier using MAX2633 for the entire VHF band that can be successfully built without…