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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1 To 2.2W Typical Single-chip Audio System For Tape Recorders

It seems there isn’t too much information out there when it comes to tape circuits. I’m not planning to make “professional” recordings on the tape recorder that will emerge at the end of the project. It is possible that these probabilistic failures or. Given the rest of the Datasheet, I might be able to locate the point la41660 this oscillator has to go. 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.

The simpliest bias generator circuits contain one transistor, a transformer, and several capacitors and resistors. Such measures include but are not. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents dayasheet could cause damage to other property.

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. When designing equipment, adopt. Description of Application Circuit. Email Required, but never shown. This is just a little project to play around, nothing serious.


Specifications and information herein are subject to.

If there is no consultation or inquiry before the intended use, our. Specifications and information herein are subject to change without notice. It seems to be quite difficult the way you describe it. VG pre 20 log Z1 dB.

audio – AC bias circuit for a tape recorder – Electrical Engineering Stack Exchange

Post as a guest Name. The dataheet circuit consists of the input differential stage TR9, 10level shift stage TR13and output stage. If you should intend to use our 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.

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

PDF LA4160 Datasheet ( Hoja de datos )

It means you need a separate bias generator anyway. Upon using the technical information or products described herein, neither warranty nor license shall be granted. To verify symptoms and states that cannot be evaluated in an independent. You may have to use a transformer to couple the two signals together and l4160 still may cause the regular amplifier some issues.

Sign up or log in Sign up using Google. Since the output la1460 is of push-pull type, no remarkable drop in the output voltage occurs even at. 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. Consider this circuit of the LA I think somewhere around kHz makes the most sense.


LA Datasheet(PDF) – Sanyo Semicon Device

OK, this is how far I’ve got: I don’t know which peak-to-peak level, and I’m not entirely sure what frequency. Check the type of your recorder erasing head.

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. It’s likely just a permanent magnet that saturates the magnetic tape in one direction. Or is it an IC that eludes me? Now, the oscillator needs to be a sine wave, but that’s pretty much all I know. I was thinking using a 70kHz oscillator, and adding it to the signal somehow before dahasheet DC bias, as in, removing the DC bias parts. The products mentioned herein shall not be.

It might be as simple as mixing those two signals using resistors. An Example of Printed Board Cu-foiled side. When designing equipment, refer to the “Delivery Specification” for the. 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.

I just want a proof of concept type of thing. The bottom line is try it and see and if it doesn’t work then no harm done. Any and all information datashset or contained herein are subject to change without notice due to. The bias current is several times higher than the recording current and also its frequency is higher.