A capacitor flash.

Why does charging take longer than a flash?

Setting up the mechanism…

Energy remaining: 0.00J
Capacitor voltage: 0.00V
Instantaneous flash power: 0.00W

Initial stored energy: 0.00J

Assemble, charge, then trigger the flash

Why does charging take longer than a flash?

A large charging resistor limits incoming current. The trigger switches the stored electric-field energy into a much smaller resistance, releasing it quickly.

Vc = Vs(1 − e^(−t/RC)); E = ½CVc²

What this model simplifies

A low-voltage teaching flash: ideal 1 mF capacitor, variable charging resistance, 10 Ω discharge path. Controls select analytical elapsed time; real xenon ignition and conversion losses are omitted.

Read the source · openstax.org ↗

Put it to work.

Store at least 1 joule and release it into the flash.

Make it work.

Store energy, then discharge it through the flash tube.

Run

Fine adjustments 4

Charging voltageV

Charge resistanceΩ

Charge durations

Time after triggers

A capacitor flash.

Why does charging take longer than a flash?

Loading the experiment…

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Figuvo is a place to look inside everyday things, build a connection, and discover the idea behind them.

177 interactive experiments. Each has a working model and a challenge to test what you found.

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Materials science

A capacitor flash.

Why does charging take longer than a flash?

Setting up the mechanism…

Energy remaining: 0.00J
Capacitor voltage: 0.00V
Instantaneous flash power: 0.00W

Initial stored energy: 0.00J

Assemble, charge, then trigger the flash

Why does charging take longer than a flash?

A large charging resistor limits incoming current. The trigger switches the stored electric-field energy into a much smaller resistance, releasing it quickly.

Vc = Vs(1 − e^(−t/RC)); E = ½CVc²

What this model simplifies

A low-voltage teaching flash: ideal 1 mF capacitor, variable charging resistance, 10 Ω discharge path. Controls select analytical elapsed time; real xenon ignition and conversion losses are omitted.

Read the source · openstax.org ↗

Put it to work.

Store at least 1 joule and release it into the flash.

Make it work.

Store energy, then discharge it through the flash tube.

Run

Fine adjustments 4

Charging voltageV

Charge resistanceΩ

Charge durations

Time after triggers