New DCC booster design, (see schematîc NB1B_sch - MERG
New DCC booster design, (see schematîc NB1B_F_sch.pdf). I have had requests for a basic DCC .... Mìke Bolton 24/01/2011. Integrated Circuit Availability ...
New DCC booster design, (see schematîc NB1B_F_sch.pdf) I have had requests for a basic DCC booster that can be used with a separate command station such as the MERG CAN_CMD and / or for additional boosters with existing systems like Lenz or the MERG BC1A. My original booster design (Boost5 on the MERG website) had auto reverse and was fairly complex. It also used a MOSFET driver IC which is quite difficult to get and moderately expensive. This new design (NB1 - New Booster 1) uses the same principles as Boost5 but is simpler and the driver ICs are cheaper and easier to obtain (for now at least). Target specification 1. 2. 3. 4. 5. 6.
Output current is dependent on choice of MOSFETs and power supply, not set by the design itself. NB1 can be rated up to 10 amps with low cost devices but there is no real limit and 100 amps plus is feasibIe! DCC voltage range is flexible and set by the power suppIy. Overload protection is by cutout and retry method. Low cost, small sìze, suitable for surface mount it wanted. Output cutout for use with ‘RailCom’ TM bi-directional communication. Use of common components. No programmable devices.
The use of MOSFET driver lCs rather than transistors or Iogic devices has many advantages. These create a high side gate voItage which is above the suppIy +ve voltage. This allows the use of N channel MOSFETs for all four in the H bridge. N channel devices are generaIly cheaper and have a lower on resistance (Rds on) as well as there being a much greater choice. The driver ICs have a high gate charge current capability so will switch the MOSFETs quickly and allow a wide range of MOSFETs to be used, even those with a Iarge gate capacity - the very high current types. The output stage of NB1B uses two 'half bridge' drivers (L6384E) as this was cheaper than a single full bridge device as used in Boost5. They have a switching delay (anti shoot-through) settable by a resistor (R15) and a turn off capability by a low voltage (
The schematic and PCB layouts are downloadable as .PDF files from the MERG site. You can create a PCB mask directly by printing the .PDF file on clear film ...
The simple to use MERG handsets produce an analog voltage for speed control and a 17 bit serial data stream for ... the serial facility is written. Mike Bolton 5/1/01.
If the speed control was already at zero (fully anticlockwise) there will be a short 'beep' ... exceeded, the CS releases your loco and control is lost. .... Mike Bolton.
Description (refer to schematic BDC1_sch.pdf). While it might have simplified the circuitry, this .... or protected by a single sided cutout like the BDC1. Mike Bolton.
short remains, it will repeat the process so, apart from the brief 'retry' periods, there is no current flowing and power is minimal. One critical factor is the retry time ...
During disposal of packaging, please separate plastic and paper/cardboard. 21. Plastic bags must be kept out of reach of children. FOR EQUIPMENT ...... Prima di collegare il dispositivo alla presa, controllare innanzitutto se la tensione e la frequen
Pb WET batteries, Pb WET maintenance free,. Pb AGM. Tipi di batteria ricaricabili: ⢠Batteria al Pb WET con e senza manutenzione,. Pb AGM. Types de batteries ...
Principal investigator's university or hospital appointment (position, department, division, medical faculty) /. Affectation universitaire ou hospitalière du chercheur ...
Thread the release cables through the housings and then secure the release handle to the Velcro on the main lift web. Assemble the main risers to the rig.
conventions. The early British computer con- ferences - portal.acm.org, 1989. ... ning short cribs on the us navy bombe. Cryp- tologia - Taylor & Francis, 2003.
move some of the pressure lines around to be able to fit your vacuum booster where it's ... the pressure line that goes down from the power steering pump.
The unit can be mounted on round ducts 5â in diameter and larger, or on rectangular or square ducts 4â and wider and as shallow as 3â. 2. ... To assure longer motor life, oil the motor twice a year with ONLY A FEW DROPS of SAE 20 oil. Two oil h
Netzadapter an. 3 Fußschalter – Schaltet den Effekt ein und aus. Bei aktiviertem Pedal leuchtet die LED. Bei deaktiviertem. Pedal wird das Signal vollständig am ...
Mais Dieu leur ouvre un passage à travers la Mer Rouge. Et ils sont ... La Bible nous dit de « tenir bon » (Exode 14, 13), et de « rester calme » (14, 14). Qu'est-ce ...
libère et nous rend libres. Ces hommes restèrent fidèles à ... force, ils prennent le vol comme les aigles ; ils courent, et ne se lassent point, ils marchent et ne se ...
Jan 27, 2016 - A WIFI system will be provided, giving free internet access to all ERTS² 2016 .... a Tool for Model-based Generation of ..... AUTOSAR. Wenhao ...
