Ferrograph Tape Recorders
#tape recorder
#audio recording
#analog audio
#vintage audio
#sound equipment
#magnetic tape
#playback
#recording
#audio electronics
#Ferrograph
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Multipurpose tape recorders TV signal generator circuit
The circuit depicted in the figure includes IC1 and C1, which form a low-frequency oscillator operating at approximately 400 Hz. IC2 and C3 are configured to create a frequency oscillator around 37 MHz. The low-frequency signal is output from C2,...
Automatic tape recording
Amateurs do not have to miss the action while away from the rig. This circuit activates a tape recorder whenever the receiver's squelch is broken. After signal loss, the recorder will turn off following a slight delay.
The described circuit serves...
Analog Audio Delay Line(3d Sound)
Utilizing an analog audio line delay, it is possible to virtually adjust the size of a room. By simply turning a knob on the audio equipment, one can modify the perceived room size. The circuit described herein facilitates this illusion,...
The Sea Song Project
An idea emerged while observing the waves of Malaspina Strait during a storm a few weeks ago. The concept is to capture the sounds of ocean waves as an audio recording—not the typical sounds heard while walking on the beach...
Tape recorder
Complete record/playback cassette tape machine amplifier. Two of the transistors act as signal amplifiers, with the third used for automatic level control during the record mode.
The cassette tape machine amplifier is designed to facilitate both recording and playback functionalities, ensuring...
Audio-Powered Tape Recorder Controller
A tape recorder can be controlled by rectifying the audio input and driving an IRF511 power MOSFET to switch the tape recorder on when audio is present. This circuit was used with a communications receiver to record intermittent transmissions, such...
Tape recorder position indicator-controller
This circuit illustrates various applications of up/down counting for monitoring dimensional position. In the tape recorder application, the LOAD REGISTER, EQUAL, and ZERO outputs are utilized to control the recorder. To ensure the recorder stops at a specific point on...
Room Recorder
A wife was working on a doctoral dissertation that involved fieldwork, specifically personal interviews in various settings. The challenge was to find a suitable technical solution for recording these interviews. Passing a tape recorder or microphone back and forth was...
High-performance recording front end circuit
Figure 3-17 illustrates a pre-equalizer amplifier with sound recording capabilities, featuring the following characteristics: (1) The circuit does not utilize a conventional mechanical switch circuit; instead, it employs fully enclosed electromagnetic relays. This design allows for a core and circuit...