This soft start circuit was found in a 1965 General Electric documentation. The SCR and bridge diodes must be in accordance with the controlled motor's current.
The cut-off frequency of the filter shown in the figure can be adjusted to values between...
This circuit was found in a Popular Electronics from the 90s. The components used are all common...
This circuit uses a dual floodgate MOSFET not very easy to obtain today. Its handling is very...