Reel video recorder. Made in the USSR in
Voronezh in 1975. Such recorders began producing in
1974, but later in the design have made some changes,
and the tape got a new name -
"Electronica-501-video". As often happened in the USSR, on its own development of
household appliances do not spend money, but simply
copied the successful foreign original. In this case,
the prototype of these models are Japanese video
recorders Sony AV-3400
and Sony AV-3420. The latter differ from each other recording standard, AV-3400
- 30 fps, AV-3420 - 25 fps.
Video recorder provides:
- Sound recording and a black and white video from a TV or
- The imposition of a soundtrack to a previously recorded
with a microphone
- Video playback on the camcorder screen and sound through
headphones or through the TV
- Still playback on a TV or video
- Erasing of sound and video
- Rewinds the tape in either direction
supplied from the AC adapter BPVM, or the battery
voltage 12. The recording system is helical, two
rotating video heads FM signal. Recording, playback - no
less than 35 minutes on a reel. Passport belt speed -
15.88 cm / sec. Recording on a chrome-oxide tape 12,7 mm
(1/2 inch) and a thickness of 27.5 mkm. Resolution - at
least 250 lines. Audio range 100 - 10000 Hz. Dimensions
of the video recorder - 295 x 272 x 153 mm excluding
protrusions, legs, hands. Weight about 9 kg.
Kinematics design and wiring video recorder "Electronica-video
VMP-1" is nearly the same
Sony AV-3400 and Sony AV-3420.
Later model "Electronica-501-video" has some differences,
particularly in the wiring added relay switching, and
added a special connector for the TV. Read more about
the similarities and differences between these recorders
can be found on the page
recorder has got me in good structural condition, but
faulty and no belt. After installing the new belt
kinematics work correctly, URH (unit rotary heads)
rotated, but the speed
was not stable, and will not be synchronized. After
repair tape works quite satisfactorily, given his age
and the fact that it was made in the USSR. The
device was presented to me by Dmitry Petrov.
After repair the tape recorder works
normally. Video footage, recorded from the TV.
Photos can be
Record on video tape recorder "
Electronics - video ¬ћѕ-1 " from recorder VHS
As seen in thephoto below,
external recordersurvivedpretty well
In the photo on the right is visible
panel switching. To connect the camcorder and the TV
uses a single connector RS-10
Left to Cable Wiring for connecting the
TV to the right - for the video camera
Nameplate manufacturing date is missing. It should be
placed in the battery compartment, but there is not even
a trace of glue. Apparently it was not here at all. Year
of manufacture is known from the best of my instructions.
It is from this tape, the rooms are the same
The pictures at the bottom of the design
of the rotary transformer, which is used instead of the
current collector used in the Sony AV-3400
this design different from URH
modern VCRs that the video heads mounted on the beam,
rotating inside a rigid drum - Housing URH.
The housing consists of two halves, fixed so that
between them there is a gap of about 1.8 mm. URH
installed horizontally, and the gap, wherein the moving
head is also horizontally, and the tape slides along
obliquely drum Guide band, fixed on its surface. The desired trajectory
of the tape gives the track struts and coil with the
tape at different levels. In modern VCRs head mounted in
the rotating drum URH, reel tape
are in the same plane, and the drum is angled URH.
More information about the structure of URH,
please visit Sony AV-3400. It should be noted that if
you copy was based on the very first modification of
Sony AV-3400, and the case URH
there was just such a design, with Guide band.
On page Sony AV-3400 is shown later versions, and the
Guide band on the housing there, but instead there is a
corresponding protrusion formed in the manufacture of
the body. In later versions URH
were also added three additional springs Pincher tape on
top, and hold it in position on the surface of the
I had the opportunity to
delve into Sony AV-3400 early versions, and I made a few
photos, including photos the
from Guide band. See the photo below.
In the photo at the bottom of board
In the picture below on the left is one
of the electronic boards to get a better shot was
visible scheme of kinematics. Lower left - auxiliary
motor. Above it a large double pulley axis is capstan. URH
right, and above it a pulley, which is transmitted to
the rotation mechanism for winding and rewinding
In the photo below board audio channel
Equivalent circuit diagram video recorder
"Electronica-501-Video" can be downloaded
In total in the circuit 82 transistors, KT358V - 56 pcs.,
KT342B - 10 pcs., KP303V - 4 pcs., KT801B - 3 pcs.
KT603B - 2 pcs., GT321V - 2 pcs., GT403B - 1 pc., GT108G
- 1 pc., KT315G - 1 pc., KT807A - 1 pc., MP20B - 1 pc.
Of these, the video channel - 33 pcs., In a sound
channel - 8 pcs., In the scheme of Servo - 35 pcs., In
voltage regulator - 6 pieces.
Instructions for use video recorder "Electronica-video