Electronica-508M-video. Home color video recorder. Made
in 1982 in the USSR, on the Voronezh plant
"Electronics". Previous modification of the
"Electronica-508-video" began producing in 1979, and
they differed design URH. The early versions used URH,
which set back in the very first black and white
domestic video recorders
"Electronica-video VMP-1" and
"Electronica-501-Video" (1974). These recorders were in
turn a copy of the Japanese "Sony AV-3400" (1969).
recorder "Electronica-508M-video" provides:
- Records in black and white and color video from TV.
Color system SECAM-3B.
- Records in black and white video with a camera
- Video playback on a color or black-and-white TV.
- Record audio from a microphone.
- Listen to audio through the earpiece.
- Rewind the tape in both directions.
- Erasing a recording.
- Playback of recordings made on another video of this
is powered by an AC 220 V, 50 Hz. The recording system
helical two rotating video heads. Recording time 45 min,
while fast 5 minutes. Audio range 80-10 000 Hz.
Dimensions 425 x 375 x 202 mm. Weight 15 kg. Detail the
technical specifications can be found in the manual,
which is available at the bottom of the page.
Kinematics is made on three engines. 1 - engine speed
URH built into the casing. 2-speed motor
drive shaft (drive shaft is the axis of the engine). 3 -
induction motor winding and reeling. Special attention
should rewind and take-up system. Instead of the usual
rubber rollers or belt it uses aluminum disk rotation
effect in a rotating magnetic field. Induction motor is
in the middle, between the server and the receiver nodes,
and moves to the right side of the hinge to the site,
depending on the mode of operation. On the axis of the
motor mounted magnetic coupling consists of two round
magnets in the gap between them are edge nodes reeling
aluminum wheels. Rotating magnets create the aluminum disc eddy currents
and magnetic fields, which cause them to rotate. Was
very unexpected to see such innovative products in the
domestic video recorder turn of the 70's and 80's.
The device has got me in perfect condition, sealed, and
traces of repair inside I discovered. But of course it
was defective. Kinematics earned almost immediately,
needed only lubrication of the induction motor.
URH motors and drive shaft immediately
began to rotate normally, ie their management scheme
apparently intact. Recording and playback are not yet
available, and this has yet to be sorted out. Most
importantly, URH is in good
condition, both heads intact, at least through the 30x
microscope mechanical defects I discovered.
URH the video recorder is similar to an earlier design
URH on tape
"Electronica-501-Video", but has a
fundamental design differences. In particular, the
cabinet has been strengthened by increasing the
thickness of the component parts, gauges moved to the
bottom of the hull, the engine used a different design,
the diameter of the drum is reduced from 115 mm to 105
the design makes a good impression, all the mechanics
made soundly, working fine, and no public comments on it
there. The electronic boards also look good, done
The prototype of the
this recorder is
was produced from
A similar design also has a video recorder Unitra MTV10.
Photos can be enlarged
On the left of the top cover seal, in the
photo on the right - the bottom
In the photo to the right mode rewind.
Magnetic coupling is biased towards the delivery unit
The module color - A3
À2 - the Channel of a sound
À4 - the Channel of record of video
À5 - a regulator of speed
À7 - the Channel of reproduction of video
The video camera is not included with the
tape, but intended to be used with video cameras such as
"Electronica-841". Detailed photo
camera can be viewed at
A photo is lower - the block of interface
of video of the tape recorder with the TV such as
The circuit of the block of interface of
the videorecorder with the TV such as USCT-2.