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Tubes - ECH83

The National Valve MuseumECH83 @ The National Valve Museum [Datasheet]
The ECH83 is a triode heptode frequency changer has the unusually low anode voltage of 12.6 Volts, the voltage of vehicle batteries. This valve was clearly designed for use in such an environment, Mullard describe it as being designed for use as a mixer in hybrid car radios.
http://www.r-type.org/exhib/aaa0246.htm

Click to enlargeECH84 preamp by Sergey Engel
The preamp sounds very nice even under low voltages, not a hi gain distortion but a nice warm tone with plenty of output volume.
http://meatexz.com/engel-sound/ECH83preamp.html

Click to enlargeZelfbouw-rechtuit ontvanger (in bestaande kast)
De getoonde versie is een éénkringer met roosterdetectie en terugkoppeling (schakeling afgeleid van de Maxwell "Hobby"), ingebouwd in de kast van een "sloopradio" (Philips/Norelco), met gebruikmaking van aanwezige ferritantenne, variabele condensatoren, schaalaandrijving, schaalverlichting en luidspreker, en benutting van beschikbare buizen.
http://home.kpn.nl/nostronica/Norelco.htm


Creation date : 01/12/2012 @ 21:42
Last update : 13/08/2015 @ 09:15
Category : Tubes
Page read 9927 times


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