• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

About this electronic tube: 4Ц14C

4Ц14C or 4z14s
is listed as "Noise Diode" in radiomuseum.org

4Ц14С, Tube 4Ц14С; Rohre 4Ц14С ID40042, Noise Diode

however in a link to a diy build with this tube the author writes:

" ... supplies current to the filament of the 4Ц14С which is a saturation diode used for controlling circuits (not a noise diode) and with a small change in the filament current, there is a significant change in anode current. The 4Ц14С needs more than 1A of current, at max power it uses 1.75A on average ..."

some more data from an expired ebay offer:
Name 4C14S
Type diode
Application application in voltage regulators
Cathode type tungsten,direct heating
Envelope glass
Mass,g 32
Filament voltage,V 4
Filament current,A 1,6-1,9
Anode voltage,V 60
Anode current,A 0,007
Anode power,W 1,2
Socket type rsh5

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Last edited:
1st line in english:
Purpose: work as a non linear element in voltage stabilisers
 

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