3
votes
Hybrid Relay- reverse Engineering
These are my interpretations of the datasheet db_en_elr_h5_ies_pt_p_107917_en_03.pdf (618 kB) on the download page and your photograph. The answers are only possibilities that occur to me and may be ...
- 188k
2
votes
Hybrid Relay- reverse Engineering
For safety disconnection you need 3 relays , 2 NO contacts.
another one is necessary to reverse 2 phases.
simulate this circuit – Schematic created using CircuitLab
There is another smaller ...
- 2,407
2
votes
Relay kickback causing ESP32 to restart
Your colleague is wrong. The diode is mandatory of you want to suppress coil kickback. However in the circuit you drew, the coil is constantly powered so it does enegize the solenoid anyway. The ...
- 196k
1
vote
28 VDC 1.5A, 0.5A when fully charged, how can create a low current cutoff relay?
Though one can easily find a relay, or rewind an existing one with a few turns of heavy wire. so that it would drop at at 0.5A, it is far better to use a charger circuit specifically designed for that ...
- 6,323
1
vote
Relay kickback causing ESP32 to restart
You also need a diode on the solenoid. Depending on the inductance of the solenoid and its resistance, you may need a diode capable of taking more than 1 amp when the relay opens, and all of the ...
- 354
1
vote
Relay kickback causing ESP32 to restart
Well the diode will "short circuit" the relay, but that is the whole purpose of the diode. The inductor can not change its current instantly when the relay opens. So it will increase its ...
- 3,553
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