The GZ34 isn’t a very talked about tube, but it is one of the most common rectifier tubes found in audio, especially in guitar amps. Rectifier tubes were some of. Page 1. Page 2. Page 3. Page 4. Page 5. GZ34 page sheet date. 1. 1. 2. 2. 3. 3. 4. 4. 5. FP. GZ Netzröhre für GW-Heizung indirekt geheizt. Parallelspeisung. DC-AC- Heating indirectly heated connected in parallel. TELEFUNKEN. Zweiweg-.
|Published (Last):||4 August 2012|
|PDF File Size:||2.37 Mb|
|ePub File Size:||6.79 Mb|
|Price:||Free* [*Free Regsitration Required]|
These resistors need to have a power rating that comfortably exceeds: Again, you don’t have to worry about peak and surge current ratings, provided the average current datasueet is adequate for the job. If the transformer alone doesn’t have enough resistance to meet this requirement then you need to make up the deficit by adding resistors in series with each anode.
Antique radios, Old Time Radios.
After rectification this will produce a DC voltage somewhere between: Collection of Oskar Elm D. However, you can easily use a pair of silicon diodes to complete the bridge.
Collection of David Datasheef GB. Collection of Massimo Pedrina I. Valve Rectifiers Ordinary valve rectifiers contain two diodes which gz43 the same cathode and heaterin one bottle.
As a rough approximation, at full load the DC output voltage will normally be between 1 and 1. Quantity of Models at Radiomuseum. Sovtek; Saratov National Electronics, Inc.
Two-Phase Rectifier The two-phase rectifier is used with a transformer that has a centre tap. Collection of Karl – Heinz Bossan D. This is common in solid-state amplifiers. Rpri is the DC resistance of the transformer’s primary winding; Rsec is the DC resistance of one half of the transformer’s secondary winding, i.
GZ34 Datasheet(PDF) – NXP Semiconductors
The attached pdf gives a brief overview, but other factors such as series resistance and capacitor loading must also be considered. The GZ34 data sheet quotes Vrms datasbeet personally I wouldn’t trust a modern production bottle to handle this.
Collection of Patrice Zeissloff F.
The total limiting resistance per anode in the actual circuit is the combnation of transformer resistance, plus any resistance we add ourselves: Vintage power supplies used two-phase rectifiers because it requires only two diodes which could be in the same bottle.
This can be done daatasheet adding a 10nF to nF capacitor in parallel with each diode. It may be OK for that amplifier but not for all! Telefunken Werkstattbuch Wolfgang Bauer. Collection of Aldo Patriarca CH. The DC voltage will therefore fall to: Vaccum rectifiers must not be ‘hot switched’, i. GZ34 End of forum contributions about this tube. The data sheet will usually contain various graphs and tables of recommended operating conditions, some showing how much the voltage will sag with different load currents, so it should be fairly easy to extrapolate this information into your own design.
Required Diode Ratings The diodes in a two-phase rectifier need to have an average forward current rating that comfortably exceeds the maximum DC load current in your circuit. For the GZ34 this is mA for a capacitor-input rectifier with transformer voltages up to Datasheett, but the limit is reduced for higher transformer voltages. What if the transformer voltage is higher than this?
Valve rectifier data sheets usually state the maximum RMS transformer voltage that the valve can withstand in an ordinary two-phase rectifier circuit, rather than quoting limits in peak values like modern data sheets. You can read about more accurate voltage prediction here.
You reach this datxsheet or valve page from a search after clicking the “tubes” tab or by clicking a tube on a radio model page.
The Valve Wizard
Don’t forget about adding fuses! The GZ34 data sheet quotes a maximum capacitance of 60uF, although you can, in theory, exceed this if you increase the limiting resistance proportionately. A 1N is rated for V.
These two limits are interelated and serve to keep the peak ripple current below a certain unstated level. The data sheet will present table or graphs showing the minimum limiting resistance needed for a given application. Beginners sometimes call the two-phase rectifier a ‘full-wave rectifier’. The story is different with a two-phase rectifier see later. Notice that all the diodes ‘point’ towards the positive output. Collection of Patrice Yz34 F.
Collection of Marco Lagendijk NL. The vast majority of valve guitar amps still xatasheet two-phase rectifiers even when they use solid-state diodes. Collection of Peter Steffen CH.