Why Are My Relays Hot at Derek Spencer blog

Why Are My Relays Hot. problem is after 30 minutes of working, transformer and all relays becomes too hot that its hard to hold my finger on. i have to programmatically switch a 50 w load (20 v, 2.5 a) and i'm using a bosch dc relay to do it (exact part is. yes, it's on a heatsink in a ventilated enclosure. current through a coil of wire produces a magnetic field that opens or closes contacts which switch the usually higher current in. when a relay is exposed to various temperatures, its operating characteristics change dependent upon the temperature. like any component, relays are supplied with a number of normal operating conditions that can involve things like operating current and. i think the relays are hot when the transistors are off. So measure the voltage across the input of the relays. I'd define hot as hot enough that i wonder if it's worth using.

Relay Schematic
from mavink.com

like any component, relays are supplied with a number of normal operating conditions that can involve things like operating current and. when a relay is exposed to various temperatures, its operating characteristics change dependent upon the temperature. yes, it's on a heatsink in a ventilated enclosure. i have to programmatically switch a 50 w load (20 v, 2.5 a) and i'm using a bosch dc relay to do it (exact part is. problem is after 30 minutes of working, transformer and all relays becomes too hot that its hard to hold my finger on. I'd define hot as hot enough that i wonder if it's worth using. So measure the voltage across the input of the relays. current through a coil of wire produces a magnetic field that opens or closes contacts which switch the usually higher current in. i think the relays are hot when the transistors are off.

Relay Schematic

Why Are My Relays Hot current through a coil of wire produces a magnetic field that opens or closes contacts which switch the usually higher current in. So measure the voltage across the input of the relays. current through a coil of wire produces a magnetic field that opens or closes contacts which switch the usually higher current in. yes, it's on a heatsink in a ventilated enclosure. i think the relays are hot when the transistors are off. I'd define hot as hot enough that i wonder if it's worth using. when a relay is exposed to various temperatures, its operating characteristics change dependent upon the temperature. i have to programmatically switch a 50 w load (20 v, 2.5 a) and i'm using a bosch dc relay to do it (exact part is. like any component, relays are supplied with a number of normal operating conditions that can involve things like operating current and. problem is after 30 minutes of working, transformer and all relays becomes too hot that its hard to hold my finger on.

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