I'm working with rectifiers and power supplies at the moment and I'm trying to reconcile simulations with real world observations about my circuit.
It's a full-bridge diode rectifier (4x 1N5821's) with 4 parallel aluminium 470uF, 63V capacitors. Input AC peaks at 33.9v and the circuit is loaded with a 330R 5W resistor.
The input AC comes from a 240v-24v transformer and has a fast-acting 1A fuse on the 24V side.
In LTSpice modelling the diodes with the built in 1N5819's and capacitors with an ESR of 0.1, there is a large current drawn from the source when first started, peaking at 18.6A.
So why doesn't the fuse blow every time I turn the thing on?
Edit: Update - I measured the slope of output voltage when I first turn on the rectifier, from which I calculate the current by i = 1/c * dv/dt. I found that I is approximately 4A during that first charge cycle.
The answer about fuses is on the right track I feel but I'm going to leave this open for a bit.