How to make a choke for a DRL 250 lamp

Electronics / DIY electronics 69 437 20

Since DRL 250 high-pressure lamps have a fairly long service life and high efficiency compared to incandescent lamps, they are successfully used to illuminate summer cottages, the courtyard of a private house, and sometimes even indoor garages.

They have proven their reliability, quality of lighting over the years, and all this for a small amount of money. Purchasing a DRL 250 lamp will not be difficult. It is available for sale in both specialized stores and markets.

The problem may be the inductor, which is included in the lamp power circuit. Since it consists of copper wire, its cost, even used, is quite high. Therefore, this article will describe how to make a choke for this lamp from other commonly found materials. For example, from three chokes of once common fluorescent lamps. Such chokes were used in lamps for LD 40 lamps, respectively, their choke was 40 watts. Also lamps for LD 80 lamps in which the chokes are designed for 80 watts. To replace the inductor for a 250-watt DRL lamp, you will need two 80-watt inductors and one 40-watt inductor. Schemes of their connection can be seen in the figure.

Here you can see that all the chokes are connected in parallel, that is, the chokes connected in parallel form one common ballast.

One wire coming from the 220 socket connects to one end of the chokes, and the other wire in the 220 socket goes directly to the lamp. The wire from the output of the chokes goes to the second contact of the lamp. An option for installing chokes on the lamp body can be seen in the photographs.

Here you can also see how the wires are connected. It is very important to ensure that the contacts on the inductor terminals have a good connection, otherwise they will spark and heat up. In the photo you can see how such a choke works and starts the DRL 250 lamp.

This design was made and tested, showing good results. In addition to installing chokes on lamps, you can make a separate box in which they will be located, and lead the wires from it to the lamp. This assembly option will cost much less than purchasing a special throttle. I would like to remind you that according to the rules for installing DRL lamps, they must be at a height of at least three meters. Since it is believed that they emit quite a lot of ultraviolet radiation, and this is undesirable for human skin.

That's all. Try it and you will succeed.

come back

Similar master classes

A simple converter for powering energy-saving lamps

Converting a fluorescent lamp to an LED lamp

LED daylight lamp

3 useful ideas from a burnt-out incandescent lamp

Installation and upgrade of a motion sensor

LED lamp repair

Particularly interesting

Cable antenna for digital TV in 5 minutes

A selection of simple and effective schemes.

Three-phase voltage from single-phase in 5 minutes

Starting a three-phase motor from a single-phase network without a capacitor

Eternal flashlight without batteries

How to make an inexpensive but very powerful LED lamp

Comments (20)

#1 Prehenderat Guests January 9, 2016 08:13
2

The chokes must be connected in series. This is noticeable in the photo of the working lamp. But on the circuit diagram they are mistakenly shown connected in parallel.
- Answer
1. #2 Acdc Guests 8 January 2019 22:23
  10
  
  Learn physics section electricity
  
  Answer
#3 Chrome65 Guests 29 January 2016 15:25
7

Prehenderat,When the chokes are connected in series, the inductances add up and the inductive reactance increases. When connected in series, the current will be limited to the level of a 20-watt lamp.
- Answer
#4 Edward Guests 28 February 2016 19:05
1

Here I have two chokes of 150 W each (used with MGL150 lamps), if they are connected to each other in parallel and in series with respect to the lamp, I also think that it can be used with a DRL250 lamp? However, in this case, the total power of the chokes in my case will be 300 W, t .e. the lamp will operate with a slight power overload
- Answer
1. #5 Guest Andrey Guests 25 May 2018 07:35
  0
  
  Even a 20 W lamp can be safely connected through a 40 W choke.
  
  Answer
#6 Mikha Guests March 4, 2016 11:18
0

Edward, it will be fine.
- Answer
#7 Edward Guests 15 April 2016 22:57
3

Micah, I also think that it will do, I just wanted to once again make sure that my decision was correct. At one time I connected 3 chokes 1i40/220 to power a DRL125 lamp. But in this topic it would be better to have 3 chokes of 80 W each (3*80= 240W), because the 80 and 40 W chokes have different internal resistance of the windings, for 80 W it is 15 Ohms, for 40 W the resistance is 30 Ohms. Otherwise, it would not work out that the 40 W inductor will overheat. And the power on the lamp there will be a shortage of 80 + 80 + 40 = 220 W, although in principle for such a lamp a 30 W power shortage is not critical. Practice has shown that if the lamp is of high quality, then if there is a shortage of power, the lamp will work in a lighter mode and will last longer. At one time I was servicing the outdoor lighting of one military unit, and in the absence of expensive DNaT400 lamps, I wrapped DRL700 lamps, of which there were plenty in the warehouse, in lamps. So, DRL700 lamps with 400 W chokes worked for about 8 years, albeit with a slight underpower
- Answer
#8 Vladimir Guests August 3, 2016 02:18
4

In the garage, a DRL-125 has been running for a year with 2 chokes from fluorescent lamps of 40 W each (connected, of course, in parallel), in theory you would need 3 pieces, but it lights up normally as it is, the voltage on the lamp in operating mode is 119-120V. to compensate for the reactive power, a 10uF capacitor from the same old lamp is also connected.
- Answer
#9 Maros Guests 14 October 2016 04:39
2

oh, what are these coils for? have you seen the drb lamp? no throttles. Instead of these chokes, connect a 300 W incandescent lamp in series.
- Answer
#10 Edward Guests 23 November 2016 23:42
5

Maros, why such a perversion with an incandescent lamp? Moreover, an incandescent lamp will stupidly consume half the power to heat it up and the DRL lamp will not be able to light up. There are DRL lamps, they combine a quartz burner as in a DRL, and a spiral from an incandescent lamp as a ballast resistance , so the efficiency of such lamps is extremely low and the service life is limited by the service life of the spiral. If the spiral burns out, you will have to throw practically a new lamp in the trash
- Answer
1. #11 Guest Anatoly Guests July 13, 2018 09:12
  2
  
  Guys, you can use an opened DRL lamp (use only halogen).
  This device kills the burnt smell in the kitchen. You must have a watch from
  washing machines, a choke, a lamp (halogen) and a protective casing that allows air to pass through.
  A time relay (watch) serves as a switch; it runs 15 minutes.
  When something is burnt in the kitchen, turn on the device for 6-8 minutes. That's all.
  You don't have to be in the kitchen yourself. The smell will disappear without a trace.
  
  Answer
#12 DeD_Y Guests 23 December 2016 15:53
3

Edward,
80+80+40=220 and 2+2=5?
I thought that 80+80+40=200
- Answer
#13 Nail Guests 16 October 2018 23:18
0

Who could tell me how to light the DRISH lamp? (sort of like an “arc discharge pulse ball” if I’m not confusing anything) Used in light “guns”
- Answer
1. #14 Guest Yuri Guests 8 January 2019 15:56
  0
  
  DRISH is switched on in series through a choke of corresponding power 150, 250, 400 W. But to ignite the lamp, you need a high-voltage lighter (discharger), which produces a spark through the lamp bulb. For a moment, the resistance of the cold lamp drops to zero, and current from the inductor begins to flow through it, then the discharger is no longer needed until the next time the lamp is started. They are sold in lighting equipment stores.
  
  Answer