发明授权
US4417135A Power saving electronic counter circuit for tape recorder 失效
磁带录音机节电型电子计数器电路

Power saving electronic counter circuit for tape recorder
摘要:
In a tape recorder including a circuit for generating pulses according to the running of a tape, an electronic counter circuit is provided which includes a counter for counting pulses and a display section for displaying its count value. The electronic counter circuit further includes a control circuit for disconnecting a display section from a power supply source a predetermined time period after the running of the tape is stopped and a memory for storing the count value at all times.
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