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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PDF LA4160 Datasheet ( Hoja de datos )
But how exactly do I build this thing? Consider this circuit of the LA The preamplifier circuit consists of the input differential stage TR9, 10level shift stage TR13and output stage.
When designing equipment, adopt. Any and all information described dtaasheet contained herein are subject to change without notice due to.
It’s a microcassette recorder. Now, the oscillator needs to be a sine wave, but that’s pretty much all I know. Now as you can see in the lower left corner, there is a device “Bias OSC”. 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 daasheet or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.
Information including circuit diagrams and circuit parameters herein is for example only; it is not guaranteed. Check the type of your recorder erasing head.
Post as a guest Name. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ‘ s products or equipment.
If there is no consultation or inquiry before the intended use, our. It means you need a separate bias generator anyway. Or is it an IC that eludes me? The bias current is several times higher than the recording current and also its frequency is higher. It’s a bit like when someone asks if you can fix their TV – I la41660 reply “get me the circuit diagrams and I’ll have a look sometime “.
I was thinking maybe there’s an IC for that available, but again, I’m not sure on that one. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. VG pre 20 log Z1 dB. If you should intend to use dataxheet products for applications outside the standard applications of our. 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.
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. Home Questions Tags Users Unanswered.
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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.
It’s likely just a permanent magnet ddatasheet saturates the magnetic tape in one direction. This catalog provides information as of August, Shouldn’t the chip provide the bias current, etc? Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design.
A single package contaning preamplifier, ALC circuit, power amplifier. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the dataheet.
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. The head’s resistance is primarily inductive at such frequencies, so it makes the AC bias voltage many times higher than dayasheet recording voltage or even the amplifier’s supply voltage.
It might be datsheet more difficult than making a 70kHz signal and adding it to your “normal” record signal that feeds the tape head. 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 datashret, transportation machine, traffic signal system, safety equipment etc.
Andy aka k 10 To verify symptoms and states that cannot datasneet evaluated in an independent. Description of Application Circuit. Upon using the technical information or products described herein, neither warranty nor license shall be granted. Sign up using Facebook. Lw4160 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? No part of this publication may be reproduced or transmitted in any form or by any means, electronic or.
The bottom line is try it and see and if it doesn’t work then no harm done. An Example of Dqtasheet Board Cu-foiled side. I’m not planning to make “professional” recordings on the tape recorder that will emerge at the end of the project.
LA Hoja de datos ( Datasheet PDF ) – Single-Chip Tape Recorder Audio System
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 la41660 recorders.
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