This is a look inside a fairly common Dezac ioniser / negative ion generator.
It's quite a smart unit, and has a fairly standard multiplier circuit optimised for European 220-240V operation.
Notable things are the horrible little neon lamp under a blue coloured tip. A blue indicator would have been quite cool looking, especially for something that was made before blue LEDs existed. It always looks a bit twee when an orange indicator is put behind a green or blue filter, since the narrow wavelength of the neon light always just ends up looking out of place.
The resistor for the neon is super-generously sized. That's possibly because they noted that the Mountain Breeze ionisers had issues with their neon indicator current limiting resistors burning up.
The circuit is a very standard 22 cap/diode multiplier with the usual 10nF 630V capacitors, 1N4007 rectifier diodes and two 10 megohm resistors on the output.
While trying to open the unit I mistakenly put the mains flex into the strain relief section in the middle of the case. Looking at the flex it is not kinked in a manner that suggests it has been round that loop. Probably because in hindsight they realised that the adjacent part of the circuit board was live at several thousand volts above the insulation rating of the cable.
The case appears to be heat staked or at least forcibly clipped together. The two parts had to be destructively prized apart.
It's quite a smart unit, and has a fairly standard multiplier circuit optimised for European 220-240V operation.
Notable things are the horrible little neon lamp under a blue coloured tip. A blue indicator would have been quite cool looking, especially for something that was made before blue LEDs existed. It always looks a bit twee when an orange indicator is put behind a green or blue filter, since the narrow wavelength of the neon light always just ends up looking out of place.
The resistor for the neon is super-generously sized. That's possibly because they noted that the Mountain Breeze ionisers had issues with their neon indicator current limiting resistors burning up.
The circuit is a very standard 22 cap/diode multiplier with the usual 10nF 630V capacitors, 1N4007 rectifier diodes and two 10 megohm resistors on the output.
While trying to open the unit I mistakenly put the mains flex into the strain relief section in the middle of the case. Looking at the flex it is not kinked in a manner that suggests it has been round that loop. Probably because in hindsight they realised that the adjacent part of the circuit board was live at several thousand volts above the insulation rating of the cable.
The case appears to be heat staked or at least forcibly clipped together. The two parts had to be destructively prized apart.
In 2023 what is the best negative ion generator you can buy for a decent price?
What if a balanced introduction of both positive and negative ions were generated in a looped setting was tried. Perhaps the air would smell different?
Many thanks for the easy too follow understanding of the ioniser
Presumably the best place for an ioniser would be suspended from a lighting rose, needles down… Shame they don't seem to make any like that, as they're very useful contraptions!
Would this type of ionizer produce significant amounts of Ozone?
Excuse can you just tell me if this Ioniser makes a noise or not?
Is it possible for you to show internals of "NaturAir Pro" ionizer? That would be super great!
See? No pharaoh or grain inside this one either. Pyramids were stargates.
OMG. That unit can't have a CE marking when it is built like that. No safety insulation from the net!!!
What the hell is an ionizer!?
another scam.
Clive this unit has only 20 capacitors, not the 22 you mentioned and revealed inside the MountainBreeze, how does that make it different? I also wonder how these things were different in the States with 110 V AC a compared to the 220-230 regions on earth?