TA7668 Tape Recording + Playback Preamplifier amplifier Board For tape drive L

Description

1. Adopt TA7668 head recording and playback chip design (original disassembled chip, don’t buy if you mind),
2. Old-fashioned tape drive, dedicated for head amplification of deck. , Play and record dual purpose.
3. The recording signal input can be connected to the audio output of computers, mobile phones, mp3 and other devices for recording,
4. The wiping adopts AC degaussing wiping method (better, clean and thorough than permanent magnet wiping and DC wiping).
5. The power supply has a rectifier circuit, which can be AC ​​input or DC input.
When recording with a permanent magnet erasing head, there is no need to connect the AC erasing circuit (the erasing effect will be a little short, it is recommended to use the AC erasing head movement)
Wiring method for recording and playback:
The magnetic head is connected to the IN-CT interface, and out is the audio signal output terminal (the pre-play output is connected to the power amplifier board, and it can also be used for monitoring the recording input signal during recording)
IN is connected to the recording audio signal input (only used in recording mode. Note that the input signal should not be too large, otherwise the recording will be distorted. You can first adjust the recording signal to a small state and input, and then listen to whether the speaker sound is distorted. If distorted, input The signal is too large and needs to be reduced. Repeatedly adjust the sound until the sound is normal, and then you can record.
Specially used for recording: connect the magnetic head to the LY interface, switch to the recording mode, and directly input the audio signal (the input signal debugging method is the same as the recording and playback mode).
Working voltage: AC: 8-16v or DC: 12V-24V
Board size: length, width and height 100mm*50mm*23mm
Note: The recording and playback switch is manually switched by default (pressing the switch is the recording mode, and vice versa is the playback mode). If you have a strong hands-on ability, you can change the recording button control of the movement (first step: self-locking the recording and playback switch) To remove it, just change the direction of the hook of the toggle switch. The operation needs to be very careful not to remove the hook, or it will be useless. The second step: fix the board and place the toggle switch on the recording button. It is enough to make the recording and playback switching work normally at the switch pressing place.
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On Jul-02-21 at 19:11:06 PDT, seller added the following information: