On Thu, 26 Nov 2020 08:23:37 -0500, Ken Hart
wrote:
On 11/26/20 12:46 AM, geoff wrote:
On 26/11/2020 12:35 pm, Eric Stevens wrote:
On Wed, 25 Nov 2020 10:20:34 +1300, geoff
wrote:
Sounds promising.
https://tinyurl.com/yxt5j7l7
The article reads like a puff.
Heat is generated in IC circuits not just by the resistance to the
flow of electricity but by switching losses. Heat is generated every
time a bit switches from 0 to 1 (or vice versa). Even if there are no
ohmic losses, switching losses remain.
The only cause of heat is current through resistance. This happens
*during* the transistion of 0-1 and vice-versa in switching applications.
geoff
Because during the transition from open to closed (or vice versa), there
is current flow through a resistance. A switch circuit does not go from
open to closed (or vice versa) in no time at all; there is a very (very,
very) short time when the switch is a (variable) resistor.
Quite right and switching heating can be a significant part of the the
thermal load.
--
Regards,
Eric Stevens