CHARGE SENSITIVE PRE-AMPLIFIER
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Charge sensitive Pre-amplifier PA320 is designed for use with gas filled proportional detectors, X-ray proportional detectors, BF-3 & He3 neutron detectors etc. Users will have the choice to change the load resistors & charge sensitive feedback capacitor according to the gain & sensitivity requirement for a specific application. Charge sensitive pre amplifier consists of an operational amplifier with capacitive feedback & uses an N-FET in the input stage. Output driver transistor is capable of driving a 100 ohms impedance coaxial cable. Detector output is also brought out from the second stage, for using it for data acquisition purpose. This unit is provided with built in comparator with threshold adjustment to give TTL output for counting applications
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optical amplifier
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We Offer Optical Amplifier. The High Power Optical Amplifiers Model 916H is primarily used in FTTH distribution applications. It comes with single input port and up to 32 output ports. It is configured for high output powers up to +33 dBm and can service more than 1000 CPEs/ONTs. These amplifiers are available in different models to suit the customer’s specific requirements. The unit is available in 2U rack mountable version that can be easily fixed in any standard 19” racks. FEATURES High output powers are from +13 to +20 dBm per port Up to 32 output ports Integrated safety features Interface options of with RS232, LAN along with SNMP capabilities. The unit is provided with power supplies, AC mains (90 to 270 V) or -48 ± 4 V APPLICATIONS FTTH CATV distribution RF video over Fiber Triple-Play services
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Plena Power Amplifier
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480 W power amplifier in a compact housing » 70 V / 100 V and 8 ohm outputs » Dual inputs with priority switching » 100 V input for slave operation on 100 V speaker line » Temperature controlled forced front to back ventilation, directly stackable » Mains, battery back-up, and pilot tone supervision » TÜV certified according to IEC 60849 The LBB 1938/20 is a powerful 480 W power amplifier in a 3U high 19”case for rack mounting or tabletop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions. This highperformance unit fulfills a wide range of public address requirements at a surprisingly low cost. Functions DependabilityThe amplifier is protected against overload and short circuits. A temperature-controlled fan ensures high reliability at high output levels and low acoustic noise at lower output levels. An overheat protection circuit switches off the power stage and activates an LED on the front panel, if the internal temperature reaches a critical limit due to poor ventilation or overload.The unit operates both on mains power and on a 24 V battery power supply for emergency back up, with automatic switchover.For emergency and evacuation use, the following functions are monitored: mains presence, battery present, pilot tone presence, amplifier operation. Front panel LEDs indicate the status of supervised functions. The LEDs of pilot tone supervision and battery status can be switched off for general public address use. Failsafe (normally energized) relays are provided for each supervised function. These relays are always active regardless of the switches on the rear panel.InputThe system has two balanced inputs with priority control, each with a loop-through facility. This makes it easy to connect remote systems that require priority control. An additional 100 V line input is provided to connect the amplifier to a 100 V loudspeaker line, to provide more power to remote locations.Gain or level control is located on the rear of the unit to avoid accidental setting change. A meter with LED-bar shows the output level.OutputThe amplifier has 70 V and 100 V outputs for constant voltage loudspeaker systems and a low impedance output for 8 ohm loudspeaker loads.The LBB 1938/20 has two separate priority controlled 100 V outputs for zones that only need announcements made via the priority input, and for zones that will not get any announcements made via the priority input.
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the erbium doped fiber amplifiers (edfa) has generated a lot of interest in both optical communication industry and research community because of their inherent ability to directly amplify signals in the optical domain. Optiwave has developed one such optical amplifier based on edf. These amplifiers are available in different models to suit the customer's specific requirements. The unit is available in three different versions viz., 1u rack mountable that can be easily fixed in any standard 19" racks, gain block (msa) that can be used as a bench-top model and pump driver provided with only the pump drive electronics. features applicationsnetwork signal boostersdh/sonet systemscatvr&d applicationsoem application the required model can be selected based on customer requirement. the small signal gain can be up to +35 db. the available output powers are from +10 to +23 dbm. provision for co-propagating and counter-propagating of pump power. the unit is provided with rs232 interface, lan interface along with snmp capabilities. the user can set the required output power or define the pump laser drive conditions. the unit is provided with redundant power supply, ac mains (90 to 250 v, 50 ± 2 hz) or -48 ± 4 v or +5v.
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