One-button load management

All good undertakings. Today I decided to present you a simple one-button load management scheme. I don’t always want to see some switches, toggle switches on the panel of my device, just put one on-off button. The circuit is very reliable and easy to configure, it does not need to, the main thing is to assemble correctly from pre-tested working parts. Figure 1 shows an option without relay switching, which allows you to connect a load of up to one kilowatt, but at the same time you need a heatsink cooling radiator. In fig. Figure 2 shows the replacement circuit for relay isolation at which a more powerful load can be controlled depending on the parameters of the relay.

It is also advisable to install the transistor on a cooling radiator if a long time of operation in the on mode is assumed.