One of the single-junction transistor time relay circuits
Source: InternetPublisher:拿铁三分糖 Keywords: Single junction transistor time relay relay circuit oscillator Updated: 2020/02/26
One of the single-junction transistor time relay circuits
It is actually a JS15 time relay circuit . It uses a relaxation oscillator composed of a single-junction transistor
VT, resistors Ri, Rz, R3, potentiometer RP and capacitor C1 . Its pulse repetition period can be as long as
tens of seconds. This kind of time relay can achieve high delay accuracy and good repeatability. The delay time ￡ can
be calculated according to the following formula:
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