Vectronics VEC-483K Manuel d'utilisateur télécharger pdf

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch

INTRODUCTION

General Information: Ever wish you could edit the "dead air time" from tape

recordings of meetings, speeches, interviews, etc? Now you can do it while you

record with the VEC-483K Voice Activated Tape Recorder Switch Kit. With

voice activation, you save money by recording more information on each tape--

and you save valuable listening time during playback because every inch of tape

is filled with information. In addition to voice-activating your recorder, the

VEC-483K helps you make better quality recordings because it places a high-

quality electret microphone near the sound source, and far away from the noisy

tape transport mechanism in your machine.

Circuitry: The VEC-483K has two parts. First, a sensitive electret microphone

picks up sound and sends it to your recorder via the external microphone jack.

Second, a high-gain op-amp samples the microphone signal, amplifies it, and

then detects it--using the detector level to drive a FET switch. This switch, in

turn, activates and pauses your recorder via the remote jack. Sensitivity and

hold-delay are both adjustable to your liking. The unit is internally powered by a

long-lasting 9-volt alkaline battery.

TOOLS AND SUPPLIES

Construction Area: Kit construction requires a clean, smooth, and well-lighted

area where you can easily organize and handle small parts without losing them.

An inexpensive sheet of white poster board makes an excellent construction

surface, while providing protection for the underlying table or desk. Diffused

overhead lighting is a plus, and a supplemental high-intensity desk lamp is

especially helpful for close-up work. Safety is always important! Use a suitable

high-temperature stand for your soldering iron, and keep the work area free of

clutter.

Universal Kit-building Tools: No special tools are required to complete this

kit beyond common items normally used for bench construction. We

recommend the following:

! Soldering Iron (grounded-tip and temperature-controlled preferred)

! High-temperature Iron Holder with Cleaning Sponge

! Solder, 60/40 or 63/37 with rosin or "no-clean" flux (.031" dia. is good

size).

! Needle Nose Pliers or Surgical Hemostats

! Diagonal Cutters or "Nippy Cutters"

! Solder Sucker (squeeze or vacuum pump type), or Desoldering Braid

1 2 3 4 5 6 ... 16 17

Résumé du contenu

Page 1 - TOOLS AND SUPPLIES

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 1 INTRODUCTION General Information: Ever wish you could edit the "dead air time&qu

Page 2 - BEFORE YOU START BUILDING

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 10 # # 21.$Locate the tie-wrap and install as shown. Your kit has two (2) min-phono jack

Page 3

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 11 pattern on the PC board? Is the banded end of each diode positioned correctly? Were

Page 4 - PARTS LIST

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 12 working properly, you may set these more precisely for your personal preference. 1.

Page 5 - PARTS PLACEMENT

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 13 sensitivity (R7) until the recorder remains on. If playback sounds "choppy"

Page 6

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 14 THEORY OF OPERATION Electret microphone MIC1 picks up sound and generates an audio si

Page 7

Page 8

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 16 ENCLOSURE To install your Voice-Activated Tape Recorder Switch in the VEC-483KC match

Page 9

Page 10

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 2 ! Bright Desk Lamp ! Magnifying Glass BEFORE YOU START BUILDING Experience shows the

Page 11 - TESTING AND ALIGNMENT

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 3 needle-nose pliers. Heat the pad beneath the lead you intend to extract, and pull gen

Page 12 - OPERATING INSTRUCTIONS

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 4 Multilayer271(270 pF)Ceramic Discs||1uF35V+-104Electrolytic 1 uF10 pF = 100100 pF

Page 13 - IN CASE OF DIFFICULTY

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 5 then be able to identify it by process of elimination. Finally, your kit will go toge

Page 14 - THEORY OF OPERATION

Page 15

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 7 This kit has 5 fixed-value resistors. Mount these now, starting with the smallest val

Page 16 - ENCLOSURE

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 8 # # 10.$Install 1 uF at C5 and solder. Locate two (2) 10-uF electrolytic capacitors.

Page 17

VEC-483K Owner’s Manual Voice Activated Tape Recorder Switch 9 Also, when soldering, make sure the socket remains flat against the board surface. # #

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Vectronics VEC-483K Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Accessoires pour la télévision Vectronics VEC-483K. Vectronics VEC-483K User Manual Manuel d'utilisatio

Résumé du contenu

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