Tea Tray Amps By Douglas De Young
Bradley A Blanchard
Keith Smith

EU and UK Customers

Don' Audio in Germany has a stock of large stock of EDCOR transformers. They sell B2C and bulk B2B.

You can find a list of EDCOR's transformers on their store website.. Build it good, build it proud.

Visit Don' Audio

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The Voltage Dilemma

The Voltage Dilemma

Brian Weston
Custom design a XPWR transformer with a number of outputs (secondaries) totaling 300VA. Let’s say one of the outputs is 6.3Vrms (all future comments will be rms Volts) at 5A. In addition, don’t let the temperature rise above 40 degrees Fahrenheit and keep the flux density well below saturation. Simple, right?
Design Overview

Design Overview

Brian Weston
Transformers are the least understood of all electrical components. So, we thought we would give you some insight into the design.
Tri-Tone Generator

Tri-Tone Generator

Brian Weston
This little circuit is a 3 tone generator. Back in the late 1970's and 1980's EDCOR used this generator on the a number of input modules that were used in their modular power and mixer amplifier. This module would supply a tri-tone to the amplifier when a set of connection was complete. It was use security and notification across the background sound system.