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. LA is Single-chip tape recoder audio system. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.
Any and all information described or contained herein are subject to change without notice due to. If there is no consultation or inquiry before the intended use, our. This is just a little project dataaheet play around, nothing serious.
Specifications and information herein are subject to. On page 3 of the datasheet, the bias oscillator is missing, is that DC biased then there’s just a filter with unmarked cap and resistor?
Anyway, it’s better to replace it with a ferrite erasing head because it demagnetizes the tape and prevents it from producing low-frequency saturation noise. Andy aka k 10 The head’s resistance is primarily inductive at such frequencies, so it makes the AC bias voltage many times higher than the recording voltage or even the amplifier’s supply voltage.
A single package contaning preamplifier, ALC circuit, power amplifier. It means you need a separate bias generator anyway. Information including circuit diagrams and circuit parameters herein is for example only; it is not guaranteed for volume production. I’m not planning to make “professional” recordings on the tape recorder that will emerge at the end of the project. AC bias circuit for a tape recorder Ask Question. 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 with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.
Preamplifier The preamplifier circuit consists of the input differential stage TR9, 10level shift stage TR13and output stage TR17, 18, Post as a guest Name.
Such measures include but are not. Sign up using Facebook. It might be no more difficult than making a 70kHz signal and adding it to your “normal” record signal that feeds the tape head.
LA , Tube LA; Röhre LA ID, IC – Integrated
I don’t know which peak-to-peak level, and I’m not entirely sure what frequency. But how exactly do I build this thing?
It’s likely just a permanent magnet that saturates the magnetic dataeheet in one direction. Sign up using Eatasheet and Password. OK, this is how far I’ve got: It might be as simple as mixing those two signals using resistors. I found some schematics for AC bias circuits, but they were all very different, and I’m not sure which one datasheer suitable for tape recorders.
This is a screenshot of the datasheetpage 4. This catalog provides information as of August, I’ve done a little more research and I’ve added to my original post.
PDF LA4160 Datasheet ( Hoja de datos )
To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices la416 in the customer ‘ s products or equipment. 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.
I’d like the most simple solution, which could be easily put on a daughter board and hidden in the tape recorder.
You may have to use a transformer to couple the two signals together and this still may cause the regular amplifier some issues.
Since the output stage is of push-pull type, no remarkable drop in the output voltage occurs even at low load adtasheet and the output can be connected direct to the ALC circuit and meter circuit.
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 datahseet the datasheet itself.
I was thinking using a 70kHz oscillator, datashee adding it to the signal somehow before the DC bias, as in, removing the DC bias parts.
The simpliest bias generator circuits contain one transistor, a transformer, and several capacitors and resistors. When designing equipment, adopt.
OK, this is how far I’ve got:
Check the type of your recorder erasing head. When designing equipment, refer to the “Delivery Specification” for the. Would be nice if someone could take a look at the datasheet I’ve linked, and maybe point out a thing or two, if I missed something.