The principal function of a high voltage reed relay is to isolate as high a voltage as possible, Cynergy3 achieve this through the use of evacuated reed switches. This is achieved through the use of copper plated reed switches, with Rhodium contacts, packaged in carefully designed coil assemblies. These relays are designed for use in the HF band and are typically used in HF amplifiers and aerial tuning units (ATU's). Portable EquipmentReed Relays. Rhodium offers superior low contact resistance, which, coupled with Cynergy3's copper plated reed switch technology, enables Cynergy3 to produce very low loss RF reed relays, with exceptional current carry performance. The coil field moves the blade to the normally open contact blade which … Because the contacts in a Reed Relay are hermetically sealed, the contacts can switch low level signals as low as femtoamps and nanovolts. These relays are well suited for applications in Security, Instrumentation and Modems. RF Reed Relays. It is an automatic switch when excited with an input signal changes the output circuit quickly. Ferromagnetic screening can be used to contain this magnetic field, so allowing closer placement of reed relays on a PCB. switch to coil or screen), caused by surface tracking, can occur more readily at high frequency than at DC. Cynergy3's reed relays are high performance products and the materials and methods of construction are significant factors in achieving performance specifications. The reed switch closed contact uses the blade as a spring bias with a non ferrous spacer to avoid completing a magnetic circuit. The isolation voltages quoted in the data are for DC or AC peak. Care must be taken when hand soldering to the contact terminals, as physical and thermal shocks can damage the glass to metal seals. Conversely, breakdown outside the switch (i.e. COIL: An assembly consisting of one or more turns of wire around a common form . Reed arrays passed out of use in the mid-1990s, being unnecessary in digital telephone systems such as DMS-100 and 5ESS switch. reed relay applications. The benefit of RF screening is that it reduces the RF through losses (ESR) of the relay and extends the relay performance, at high frequencies and high ambient temperatures. Verification of any particular voltage or frequency combination, within the HF band (1–30MHz), can be undertaken upon request. United Kingdom, Cynergy3 Components LLC Surface contamination may result in poor conductivity for low-current signals. Wimborne Dorset BH21 7PE In general breakdown across the contacts occurs at a higher RF peak voltage than DC. Operate and release times for the relays are quoted with coil suppression fitted (unless otherwise stated). It is recommended that all relay coils be suppressed, by fitting a reverse biased diode across the relay coil; this is essential for latching relay types. to minimize magnetic coupling between the relay and external magnetic fields. United States, © 2019 Sensata Technologies, Inc. All Rights Reserved. A reed relay is a type of relay that uses an electromagnet to act directly on reed-like contact of a reed switch contained within a glass envelope, typically bringing the reeds together to make contact when the electromagnet is energised. A rigorous reliability testing program is therefore a vital tool for providing our customers with technical support, and also for continuously improving the quality of Coto’s products . 11642 Knott Ave, E-5 Alternatively, for manual soldering iron operations: 350oC ±10oC, application time 3 seconds. Normally closed (Form B) reed relays. Dry reed relays are made of coils wrapped around reed switches. Aleph Reed Relay Application Notes Handling Shock forces (e.g., drop from a height of 30cm or more) or application of high pull or twist forces to external terminals may result in permanent damage to relays. 9006 Series Potted SIP Reed Relays. Reed relays have continued in their uses outside the telephone industry, such as for automatic test equipment and electronic instrumentation due to their hermetic seal, fast operate time, extended life to 10 operations and highly consistent contact performance. to two pins within the relay on each side of the switch . what is reliability? Reed Relay Market Size by Applications: Security Systems Telecom Equipment Process Control Systems Automatic Test Equipment Electronic Instrumentation . Many of the RF reed relay designs are of open frame construction to achieve optimum RF performance, these designs need to be handled with due care to avoid damaging the exposed coil, contact and screen connections. is connected to the coil, a residual voltage is retained at the relay coil which may cause incomplete restoration and faulty operation. Reed switch also called reed relay, is a low current magnetic switch with a concealed pair of contacts that close and open in response to magnetic field near it. For high-speed applications, the mercury eliminates contact bounce, and provides virtually instantaneous circuit … Reed relays can be supplied with changeover switches – the reed switch has a normally closed contact (when no magnetic field is applied) and a normally open contact (which closes when the field is applied). As a result, these are useful for battery powered equipment. Der Reedschalter sitzt in der Mitte der Spule. Many of the designs manufactured by Cynergy3 Components Ltd are used in Military and Defence systems therefore many of the relay designs have been tested for Bump, Shock and Vibration endurance to the following standards:-, Bump Test: EN60068-2-29:1993 (Or Equivalent), 40g 6ms Pulse Duration, Shock Test: MIL-STD-202G (Or Equivalent), 100g 6ms Pulse Duration Vibration Test: MIL-STD-202G (Or Equivalent), 20g 5-500-5Hz. We doesn't provide reed relay applications products or service, please contact them directly and verify their companies info carefully. Reed relay specifications are different to those of other components normally found in electronic circuits. Â$‡Ä†Ûìz§ož©^'ùÖac óÆeéC|÷Ïb~KEÎþÝàèapbUÎg ¯ñz€ cczø endstream endobj 39 0 obj<>/Metadata 36 0 R/Pages 35 0 R/Type/Catalog/PageLabels 33 0 R>> endobj 40 0 obj<>/ProcSet[/PDF/Text]/ExtGState<>>>/Type/Page>> endobj 41 0 obj<> endobj 42 0 obj<> endobj 43 0 obj<> endobj 44 0 obj<> endobj 45 0 obj<> endobj 46 0 obj<> endobj 47 0 obj<>stream The reeds have contacts on their overlapping ends. Mercury-wetted relay • A mercury-wetted relay is a form of reed relay in which the contacts are wetted with mercury. It should be noted that these parameters will change at a rate of 0.4% per °C change in temperature. The contacts are concealed inside a glass tube and its ends terminated out of the glass tube for external connection. Portable Defibrillators - Reed Relay application describes how our reed relay series meet high voltage demands of portable defibrillators with low power consumption Coto Technology’s reed relay & reed switch manufacturing facility is located in Mexicali, Mexico. It should be noted that any combination of voltage and current can be switched, provided they do not exceed the stated switching maximums, for either parameter or the power rating of the contact. These relays are designed for use in the HF … In general, the point of a relay is to use a small amount of power in the electromagnet-- coming, say, from a small dashboard switch or a low-power electronic circuit -- to move an armature that is able to switch a much larger amount of power. Also the internal construction of the relay, including complete epoxy encapsulation, results in reed relays with insulation resistances of 1x10E+12 Ohm or greater, between mutually isolated terminals. Cynergy3's range of RF reed relays are carefully designed to provide minimal RF signal loss and low contact resistance. Application Notes - Reed Relays High Voltage Reed Relays The principal function of a high voltage reed relay is to isolate as high a voltage as possible, Cynergy3 achieve this through the use of evacuated reed switches. A magnetic field is produced, when power is applied to the coil of a reed relay. Cynergy3 propose that either low residue fluxes are used in the soldering process (to eliminate the need for cleaning), or that the reed relays are fitted onto the PCB after the cleaning process has taken place. The standard performance measure of an RF reed relay, adopted by Cynergy3, is Effective Series Resistance (ESR); this is because these relays are very often used in high “Q” circuits, which experience high currents throughout the frequency range, as found in certain ATU circuits. —}²ªrù¯ôî:Å»{Ø´Ã1. Electromechani- cal relays cannot do this because they are not hermeti … Partially screened relays will offer extended current carry capability at elevated temperatures and frequencies up to 30MHz, over unscreened variants, due to lower ESR. * Note: ultrasonic cleaning may cause permanent damage to the relay contacts . Browse: Portable Equipment. RRE Home » Reed Switch and Reed Sensor Applications » Types of Applications » Electromagnetic or Relay Type Reed Relay in Food Processor Application When it is necessary to control a circuit load by using a separate low-power signal, or where the states of several circuits must be controlled by a single signal, such types of Reed Switch applications can be classified are Relay Applications. It is recommended that a thermal shunt (Aluminium Clamp) be clamped to the reed switch lead out adjacent to the glass seal; this will reduce the chance of breakages due to thermal shocks. 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