EL34 PDF PDF Datasheet – Audio Power Pentode ( Tube )

Part Number: EL34

Function: High Performance Audio Power Pentode

Package: 8 Pin Circle type

Manufacturer: Svetlana, philips

Images:

EL34 pdf pinout

Description

The EL34 is a type of vacuum tube, also known as a thermionic valve. It is a popular power pentode tube used in amplifiers and other audio equipment. The device is known for its warm and rich tone, making it a favorite among guitar amplifier enthusiasts.

The Device is a glass envelope power pentode having a plate dissipation rating of 25 Watts with convection cooling. It is intended for audio frequency power amplification service in either pentode, ultralinear or triode connection and single or push-pull/parallel applications. The Svetlana EL34 has an indirectly-heated oxide cathode, which may be DC operated for the absolute best hum/noise performance.

The Svetlana EL34 plate is made from a laminated material that improves heat transfer and has superior performance under overload conditions which are often seen with guitar amplifiers. Close manufacturing specification tolerances and improved processing provide enhanced reliability and superior sonic performance. The high sensitivity of a pair or quad of Svetlana EL34’s is an economical method to achieve high quality sound with a minimum of driving stage components.

The Svetlana EL34 is manufactured with the original Mullard design in the Svetlana factory in St. Petersburg, Russia, and is designed to be a direct replacement for any EL34/6CA7 or equivalent. The Svetlana EL34 gives electrical and audio performance very similar to that of the original Mullard EL34.

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EL34 tube equivalent

Replacements:

There are several variants and similar tubes to the EL34, such as the 6CA7, KT77, and KT88.

EL34 PDF Datasheet

EL34 pdf

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DG502 PDF Datasheet – Stand-alone Proximity System

Part Number: DG502

Function: STAND-ALONE PROXIMITY SYSTEM / 500 PROXIMITY BADGES 2 DOORS

Manufacturer: CDVI

Images:

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DG502 pdf

Description

 

Push button 1 Push button 2 Common PB1 PB2 N/C contact Common N/O contact Varistor RL1 Varistor RL2 Reset jumper Trigger output Door 1 relay output Door 2 relay output Auxiliary reader (terminal connections) See wiring diagram of auxiliary readers 12 V 1 2 3 4 5 Input voltage Input voltage Data Buzzer Green LED Common Red LED 12 V 1 4 5 3 2 This device comes with a varistor. The varistor must be connected to the strike terminal (electromagnet…) operated by the device. If this product works with many strikes, each of them should have a varistor. The varistor controls the overload produced by the strike coil – self-effect. If you are using a « Shear Lock » electromagnetic lock, it is recommended to use a separate power supply than the one connected to the DG502 ! Edition 17/02/00 Technical features Input voltage Output Anti-triggering contact Badge entry Master code Inputs Keyboard Distance between the auxiliary reader and the main reader 12V ~ or = 2 relays, N/O & N/C contact 3 amp @ 125V 500 milli amp 50V ~ or = 500 programmable badges 5-digit programmable code 2 request-to-exit 12-digit keypad with built-in buzzer (audible signal) minimum 60 cm, maximum 50 m (cable minimum 7 x 0.6 mm2)

Warning: Do not use a switching power supply because of the interference radiation that may disturb the reading of the badges. . Default values Master code: Relay time delay: Key-in keypad: 12345 1 second 10 seconds Audible signals 1 beep (long) Validation of data in programming mode: master code, proximity badge or time delay. Or access code validated 2 beeps (short) Accessing the programming mode or going out from the programming mode 4 beeps (short) Badge not programmed or incorrect master code, time delay entered Visual signals LED colour Green Red Orange Orange flashing Normal mode Door relay activated Alarm relay activated Stand-by Programming mode Badge position empty Badge position busy Programming mode Data computing error Request-to-exit The two request-to-exit push button PB1 and PB2 operate relay RL1 and RL2. The LED becomes green when the relay is activated by one of the push button. 2 Edition 17/02/00 Setting a new master code 1. Enter the master code twice (for the first use the master code default value is 12345). 2 beeps and the orange LED lights on confirming that you are in programming mode. 2. Enter *3 then the 5-digit new master code. The LED goes off for 1 second and an audible beep indicates that the new master code is memorised. 3. Press # to exit from  […]

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DG502 datasheet

DG502 PDF Datasheet