Long delay circuit using integrated circuit 5

Long delay circuit using integrated circuit 5

It is a high-performance long-delay timer with a timing range of o. ls—50h. It uses
the integrated circuit M51849L of Japan's Mitsubishi Company as the delay control, which has
the characteristics of good stability, high timing accuracy, and wide timing range. The output of
    the integrated circuit M51849L can reach 30mA and can directly drive low-power thyristors. Change the values ​​of Ri and Cl.
The i port can adjust the timing time. Rl must not be less than lkn.