Circuit diagram of automatic stop device for recorder

Most of the recorder movements sold on the market do not have fully automatic stop devices. Recorders with such movement devices are prone to tape rolling failures, and in serious cases, even damage to the movement's motor. The author recently installed a fully automatic stop circuit in a recorder, which basically eliminated this type of failure.

Figure 9.27.1 is the electrical schematic diagram of this device. The power switch K1 in the figure is the power switch on the movement. Press the button on the movement (except the record and pause buttons)