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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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AC bias circuit for a tape recorder Ask Question.

The simpliest bias generator circuits contain one transistor, a transformer, and several capacitors and resistors. Sign up using Facebook. I just want a proof of concept type of thing. 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.

Sample Application Circuit 2: It’s a bit like when someone asks if you can fix their TV – I always reply “get me the circuit diagrams and I’ll have a look sometime “.

Any and all information described or contained herein are subject to change without notice due to. Email Required, but never shown.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I’m not planning to make “professional” recordings on the tape recorder that will emerge at the end of the project. This is a screenshot of the datasheetpage 4.

It means you need a separate bias generator anyway. 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. A single package contaning preamplifier, ALC circuit, power amplifier.

The products mentioned herein shall not be. But how exactly do I build this thing? I’ve done a little more research and I’ve added to my original post. Preamplifier The preamplifier circuit consists of the input differential stage TR9, 10level shift stage TR13and output stage TR17, 18, Now, the oscillator needs to be a sine wave, but that’s pretty much all I know.


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. Upon using the technical information or products described herein, neither warranty nor license shall be granted. LA is Single-chip tape recoder audio system.

LA , Tube LA; Röhre LA ID, IC – Integrated

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? I don’t know which peak-to-peak level, and I’m not entirely sure what frequency. OK, this is how far I’ve got: I was thinking maybe there’s an IC for datashheet available, but again, I’m not sure on that one. It seems to be quite difficult the way you describe it. The preamplifier circuit consists of the input differential stage TR9, 10level shift stage TR13and output stage.

The bias current is dstasheet times higher than the recording current and also its frequency is higher. I found some schematics for AC bias circuits, but they were all very different, and I’m not sure which ls4160 is suitable for tape recorders. 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. It might be as simple as mixing those two signals using resistors. Or is it an IC that eludes me?

Home Questions Tags Users Unanswered. Post Your Answer Discard By datasueet “Post Your Answer”, you acknowledge that you have read our updated terms of servicexatasheet policy and cookie policyand that your continued use of the website is subject to these policies.

Post as a guest Name. It is possible that these probabilistic failures or malfunction could give rise to accidents datasgeet events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property.


It seems there isn’t too much information out there when it comes to tape circuits. 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 you should intend to use our products for applications outside the standard applications of our. I’d like the most simple solution, which could be easily put on a daughter board and hidden in the tape recorder.

PDF LA4160 Datasheet ( Hoja de datos )

Since the output stage is dataheet push-pull type, no remarkable drop in the output voltage occurs even at. You need to know your recording head’s inductance, maximum recording current and maximum bias current to design the bias generator. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or.

Specifications and information herein are subject to.

This catalog provides information as of August, The bottom line is try it and see and if it doesn’t work then no harm done. It’s likely just a permanent magnet that saturates the magnetic tape in one direction.

Such measures include but are not.

LA Hoja de datos ( Datasheet PDF ) – Single-Chip Tape Recorder Audio System

Information including circuit diagrams and circuit parameters herein is for example only; it is not guaranteed for volume production. When designing equipment, adopt. Specifications and information herein are subject to change without notice.