3 ms·
Just to add to what everyone else is saying. Quiescent current is the current the chips use doing nothing at all. It's a static power consumption. With this old
by bjt2n3904 6y ago
Just to add to what everyone else is saying. Quiescent current is the current the chips use doing nothing at all. It's a static power consumption. With this older hardware, my guess is it's shockingly high.
This test could have been a little better, if they measured current between the GB and the cartridge explicitly. Also, would want to check the voltage on the cartridge downstream of the shunt to make sure it's not browning out under the burden voltage of the current meter, and causing an artificially high current usage. (Though, going through the GB itself might address this...)
- gekkio 6y agoI initially considered measuring the cartridge +5V rail directly, but decided to go with total power consumption of the console for two main reasons: 1. Total power consumption is easier to relate to battery life, because e.g. doubling the total power consumption roughly halves battery life 2. Cartridge current draw on +5V rail doesn't fully capture the impact on total power consumption. Improper bus behaviour and leakage currents can increase current draw on the console itself. As an extreme example, shorting one of the cartridge I/O pins to ground might not pull any current from the cartridge +5V rail, but it might increase current draw and power dissipation in the main SoC significantly if it's driving the I/O line high. In any case, optimally I'd have a setup for measuring both :) But right now I only have test automation infrastructure ready for HMC8043
- aidenn0 6y agoIf you use alkaline batteries, doubling the current more than halves the battery life; Ni based rechargeables don't show that effect though