LA is Single-chip tape recoder audio system. A single package contaning preamplifier, ALC circuit, power amplifier. Features. • Preamplifier with high gain, . Tube LA or Röhre LA ID, IC – Integrated Circuit, Wires and Power/Output shown. Radio tubes are LA Sanyo datasheet. Günther Stabe. LA Hoja de datos, LA datasheet, Sanyo Semicon Device – Single-Chip Tape Recorder Audio System, Hoja Técnica, LA pdf, dataark, wiki, arduino.
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Specifications and information herein are subject to change without notice.
The simpliest bias generator circuits contain one transistor, a transformer, and several capacitors and resistors. Description of Application Circuit. I was thinking using a 70kHz oscillator, and adding it to the signal somehow before the DC bias, as in, removing the DC bias parts. Andy aka k 10 This catalog provides information as of August, Maybe you can help though?
It means you need a separate dtasheet generator anyway. If you should intend to use our products for applications outside the standard applications of our. It might be no more difficult than making a 70kHz signal and adding it to your “normal” record signal that feeds the tape head.
Now as you can see in the lower left corner, there is a device “Bias OSC”. Such measures include dataheet are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design.
It’s a microcassette recorder.
1 To 2.2W Typical Single-chip Audio System For Tape Recorders
The bottom line is try it and see and if it doesn’t work then no harm done. The products mentioned herein shall not be intended for use for any “special application” medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.
Sign up using Facebook. But how exactly do I build this thing? I’m not planning to make “professional” recordings on the tape recorder that will emerge at the end of the project. I don’t know which peak-to-peak level, and I’m not entirely sure what frequency. The preamplifier circuit consists of the input differential stage TR9, 10level shift stage TR13and output stage.
Now, the oscillator needs to be a sine wave, but that’s pretty much all I know. An erasing head is commonly attached to the generator directly, and a secondary winding of the transformer is capacitively coupled to the recording amplifier output.
Since the output stage is of push-pull type, no remarkable drop in the output voltage occurs even at low load impedances and the output can be connected direct to the ALC circuit and meter circuit. I found some schematics for AC bias circuits, but they were all very different, and I’m not sure which one is suitable for tape recorders. It seems to be quite difficult the way you describe it. Upon using the technical information or products described herein, neither warranty nor license shall be granted.
It looks like the circuit in page 3 will not be able to record anything in acceptable quality, but it can be a mistake in the datasheet itself.
A single package contaning preamplifier, ALC circuit, power amplifier.
audio – AC bias circuit for a tape recorder – Electrical Engineering Stack Exchange
Shouldn’t the chip provide the bias current, datsaheet No part of this publication may be reproduced or transmitted in any form or by any means, electronic or. Anyway, it’s better to daatsheet it with a ferrite erasing head because it demagnetizes the tape and prevents it from producing low-frequency saturation noise.
I’ve done a little more research and I’ve added to my original post. OK, this is how far I’ve got: VG pre 20 log Z1 dB.
Since the output stage is of push-pull type, no remarkable drop in the output voltage occurs even at. If there is no consultation or inquiry before the datzsheet use, our.
It is possible that these probabilistic failures or. It might be as simple as mixing those two signals using resistors.
LA Datasheet(PDF) – Sanyo Semicon Device
Specifications and information herein are subject to. Information including circuit diagrams and circuit parameters herein is for example only; it is not guaranteed for volume production.
If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. I’d like the most datassheet solution, which could be easily put datahseet a daughter board and hidden in the tape recorder. Email Datasheeet, but never shown. Sign up or log in Sign up using Google. This is a screenshot of the datasheetpage 4. On the other hand, it may not work because the “simple” resistor circuit above may cause the amplifier producing the regular record signal the audio to clip and distort.
Information including circuit diagrams and circuit parameters herein is for example only; it is not guaranteed.