I've a snubber circuit/clamp circuit. Basically it's a cap and resistor in parallel.
I have a supply of 23v and wish it to hover around 12-14v for my circuit that requires max 100mA.
My circuit has 2 smaller circuits each supplied from the main line by a filter circuit
resistor 100ohms and 16v 470uF cap.
The problem is that the first snubber (which according to some equations from ehow.com needs a min of 125ohm 694pF clamp circuit (with or without diode) clamping an initial burst of 25v at 10KHz). Soldering them only ends up with a faint pop from my 555s. To temporarily counter this problem and create a vdrop of 10v from the supply, I run a fan parallel to my circuit and I end up with 14v for my circuit. That's good. However, I intend to run the circuit on its own. I use 1 3Kohm 10nF cap clamp circuit and according to the simulator that should have me 13v on the circuit supply. On the circuit, there's berely no change: 23v which is too high. I try with 33K resistor and still voltage is way up (after some time).
What gives?
I have a supply of 23v and wish it to hover around 12-14v for my circuit that requires max 100mA.
My circuit has 2 smaller circuits each supplied from the main line by a filter circuit
resistor 100ohms and 16v 470uF cap.
The problem is that the first snubber (which according to some equations from ehow.com needs a min of 125ohm 694pF clamp circuit (with or without diode) clamping an initial burst of 25v at 10KHz). Soldering them only ends up with a faint pop from my 555s. To temporarily counter this problem and create a vdrop of 10v from the supply, I run a fan parallel to my circuit and I end up with 14v for my circuit. That's good. However, I intend to run the circuit on its own. I use 1 3Kohm 10nF cap clamp circuit and according to the simulator that should have me 13v on the circuit supply. On the circuit, there's berely no change: 23v which is too high. I try with 33K resistor and still voltage is way up (after some time).
What gives?