PWM Dimmer for CCD-FLAT box, 30kHz

incl. 27% VAT

51.90
Including 27% VAT:
51.90 € (20 500 HUF)
Net price (for non-EU customers):
40.87 € (16 142 HUF)
Add to basket Add to basket
Stock avalability
Delivery:
Available for delivery
Budapest shop:
Limited stock (1 piece). Please contact our colleagues before ordering: +36-1-202-5651
Delivery:Available for delivery
Bp. shop:Limited stock

Product code: Dimmer30kHz

PWM Dimmer for CCD-FLAT box (12-24V, faster as 30kHz, incl. 2m cable with RCA-5.5/2.1mm adaption)

Dimmer for regulating the flat field box

When regulating a FlatFieldBox (FFB) lighting for astronomical CCD cameras, we need vibration-free AND extremely short exposure times in the (sub) millisecond range. Unfortunately, conventional dimmers cannot be considered for this, but only a so-called PWM with an on and off frequency of 25 kHz or even faster!

What is PWM and why do we use it?

In theory, it would be enough to reduce the voltage by means of an ohmic resistor if we wanted to dim light bulbs rather than LEDs. However, we absolutely need a dimmer with pulse-width modulation that regulates the time interval in which the full voltage is effective: the regulating instrument is switched on and off in quick succession.

Depending on the switch-off / switch-on frequency, various accessories can be operated: for a heating jacket, switching it on and off once per second would be enough, or even less, because its inertia is very high. In everyday life, around a hundred cycles per second are sufficient for such dimmed LED lights (e.g. living room lighting), because the human eye can hardly perceive the flickering from a frequency of 25 Hz. For FlatFieldBox (FFB), which were built for astronomical CCD cameras, at least 25kHz is required in order to be able to guarantee evenly illuminated surfaces even in a short lighting time.

Technical specifications

  • Input: RCA and 5.5 / 2.1mm (note polarity: center positive)
  • Output: RCA and 5.5 / 2.1mm (note polarity: center positive)
  • Frequency: over 30 kHz, typically 31-36 kHz (guaranteed to switch on and off more than 30,000 times per second)
  • Maximum current: 3A
  • Input voltage range: 12-24V
  • Cable length: with additional cable 230cm (included)
  • Weight: 130 grams
  • RCA and 5.5 / 2.1mm plugs can be used

Because of the different FlatFieldBox (FFB) manufacturer specifications, we offer a combination solution: both RCA-RCA and 5.5 / 2.1 - 5.5 / 2.1mm connection possible. The total length of the connected cables (including the dimmer unit) is around 230cm.

More about the product

Please log in in order to be ablo to provide feedback!


Similar products

Delivery:Available for delivery
Bp. shop:Limited stock
28.61 €
Delivery:Available for delivery
Bp. shop:Stock refill in progress
78.73 €
Delivery:Under procurement
Bp. shop:Under procurement
122.28 €

Astronomical telescopes up to 100 Euros
Astronomical telescopes between 100 and 200 Euros
Microscope offer up to 200 Euros



Discount

4mm LACERTA Ultra Wide Angle FV=82 deg
4mm LACERTA Ultra Wide Angle FV=82 deg
Stock avalability
Delivery:
Available for delivery
Budapest shop:
In stock
Delivery:Available for delivery
Bp. shop:In stock
-6% 129.65 €
7mm LACERTA Ultra Wide Angle FV=82 deg
7mm LACERTA Ultra Wide Angle FV=82 deg
Stock avalability
Delivery:
Available for delivery
Budapest shop:
In stock
Delivery:Available for delivery
Bp. shop:In stock
-6% 129.65 €
SkyWatcher Evostar-90 (90/900) telescope on EQ3 with 6x30 finderscope, 25mm (36x) and 10mm (90x) Super eyepieces, star diagonal
SkyWatcher Evostar-90 (90/900) telescope on EQ3 with 6x30 finderscope, 25mm (36x) and 10mm (90x) Super eyepieces, star diagonal
Stock avalability
Delivery:
Available for delivery
Budapest shop:
In stock
Delivery:Available for delivery
Bp. shop:In stock
-10% 422.66 €
102/1300 SkyWatcher Skymax-102 Maksutov-Cassegrain on NEQ2 mount with steel tripod with Red dot finder, 25mm and 10 mm eyepieces, star diagonal
102/1300 SkyWatcher Skymax-102 Maksutov-Cassegrain on NEQ2 mount with steel tripod with Red dot finder, 25mm and 10 mm eyepieces, star diagonal
Stock avalability
Delivery:
Available for delivery
Budapest shop:
Limited stock (1 piece). Please contact our colleagues before ordering: +36-1-202-5651
Delivery:Available for delivery
Bp. shop:Limited stock
-10% 354.41 €
SkyWatcher Skymax-90 Maksutov-Cassegrain (90/1250) on NEQ2 mount with steel tripod (Red Dot Finder, 25mm (50x) and 10 mm (125x) eyepieces, star diagonal)
SkyWatcher Skymax-90 Maksutov-Cassegrain (90/1250) on NEQ2 mount with steel tripod (Red Dot Finder, 25mm (50x) and 10 mm (125x) eyepieces, star diagonal)
Stock avalability
Delivery:
Available for delivery
Budapest shop:
Limited stock (1 piece). Please contact our colleagues before ordering: +36-1-202-5651
Delivery:Available for delivery
Bp. shop:Limited stock
-10% 328.86 €
SkyWatcher Explorer-130PS Newtonian reflector (130/650) telescope for beginners on NEQ2 mount with steel tripod with 25mm (26x), 10mm (65x) Super eyepieces, red dot finderscope
SkyWatcher Explorer-130PS Newtonian reflector (130/650) telescope for beginners on NEQ2 mount with steel tripod with 25mm (26x), 10mm (65x) Super eyepieces, red dot finderscope
Stock avalability
Delivery:
Available for delivery
Budapest shop:
Minimal stock
Delivery:Available for delivery
Bp. shop:Minimal stock
332.91 €

New Products

Star Guide Atlas
Star Guide Atlas
Stock avalability
Delivery:
Available for delivery
Budapest shop:
In stock
Delivery:Available for delivery
Bp. shop:In stock
45.57 €
SkyWatcher Quattro-6S (150/600) Newtonian reflector including coma corrector
SkyWatcher Quattro-6S (150/600) Newtonian reflector including coma corrector
Stock avalability
Delivery:
Available for delivery
Budapest shop:
Under procurement
Delivery:Available for delivery
Bp. shop:Under procurement
-17% 612.10 €
SkyWatcher Startravel-102T (102/600) refractor on AZ PRONTO (AZ3-R)mount
SkyWatcher Startravel-102T (102/600) refractor on AZ PRONTO (AZ3-R)mount
Stock avalability
Delivery:
Available for delivery
Budapest shop:
Minimal stock
Delivery:Available for delivery
Bp. shop:Minimal stock
402.53 €
Acuter 60mm Maksutov-Cassegrain telescope on Dobson mount
Acuter 60mm Maksutov-Cassegrain telescope on Dobson mount
Stock avalability
Delivery:
Available for delivery
Budapest shop:
In stock
Delivery:Available for delivery
Bp. shop:In stock
-9% 167.85 €
SkyWatcher Evostar (90/660) refractor on StarQuest mount
SkyWatcher Evostar (90/660) refractor on StarQuest mount
Stock avalability
Delivery:
Available for delivery
Budapest shop:
Minimal stock
Delivery:Available for delivery
Bp. shop:Minimal stock
364.56 €

Our Latest News on Facebookon