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Tips for Crystal Oscillator Circuit Design, Essential Skills for Engineers!
2024-11-19 - Technical Discussion As an indispensable signal transmitter in the clock circuit, the crystal oscillator is required for the microcontroller to operate normally. Therefore, the participation of the crystal oscillator is also indispensable in the design of electronic circuits. A good crystal oscillator circuit design can provide the best space utilization for electronics and play the greatest functional role.
Child Presence Detection-Aker C1E Crystal Series Meet the Accuracy Requirements for CPD Applications
2024-04-01 - Application solution Article For CPD systems, millimeter wave radar uses the special 60 GHz frequency band, which features anti-interference, low power consumption, high accuracy and fast response sensing time. Depending on the body shape of the passengers in the car, it can also penetrate coverings such as blankets or coats to identify whether the passengers are children. In addition, the millimeter wave radar system can also be used in places where photography is prohibited to ensure personal safety.
What is the amount of the change in oscillation frequency when a load capacity connected to the crystal oscillation circuit is changed?
2024-08-30 - Technical Q&A You can use the following formula to obtain the amount of the change (ppm) in oscillation frequency with the change in a load capacity of the crystal oscillation circuit: Amount of the change (ppm) ≈ C1/(2C0+2CS)*10^6 C1: Series capacitance of a crystal oscillator C0: Parallel capacitance of a crystal oscillator CS: Load capacity of the crystal oscillation circuit For the series capacitance and parallel capacitance of the crystal oscillator, contact the manufacturer of that oscillator. Related Products: ML610(Q)40x, ML610(Q)42x, ML610(Q)47x, ML610(Q)48x, ML610Q17x, ML610Q35x, ML610Q36x, ML610Q38x, ML610Q41x, ML610Q43x, ML610Q46x, ML620Q13x, ML620Q15x, ML620Q416/ML620Q418, ML620Q503H/ML620Q504H/ML620Q506H, ML62Q14xx, ML62Q15xx/ML62Q18xx, ML62Q16xx, ML62Q17xx
There are Two Main Types of Crystal Oscillators: Active Crystal Oscillators and Passive Crystal Oscillators
2024-11-22 - Technical Discussion Self-oscillation characteristics of active crystal oscillators and usage requirements of passive crystal oscillators. The content involves the internal structure of crystal oscillators, especially the piezoelectric effect of quartz crystals and their role in mechanical vibration.
The 32.768 kHz crystal oscillation stops. What are probable causes?
2024-08-30 - Technical Q&A The following three problems are possible. (1) The microcontroller switched to the STOP mode. (2) Attached water droplets and frost caused leakage on the crystal oscillator connection pin. (3) The crystal oscillator was damaged by external factors such as shock. Related Products: ML610(Q)40x, ML610(Q)42x, ML610(Q)47x, ML610(Q)48x, ML610Q17x, ML610Q35x, ML610Q36x, ML610Q38x, ML610Q41x, ML610Q43x, ML610Q46x, ML620Q13x, ML620Q15x, ML620Q416/ML620Q418, ML620Q503H/ML620Q504H/ML620Q506H, ML62Q14xx, ML62Q15xx/ML62Q18xx, ML62Q16xx, ML62Q17xx
What are the benefits of using liquid instead of air cooling systems?
2024-10-30 - Technical Q&A Liquid heat exchangers can reduce the thermal resistance of conventional heat sink fan dissipation mechanisms by a factor of 10 or more, which makes it much more efficient. This is due to the poor thermal properties of air versus coolants such as water. Liquid cooling systems have a more rapid cool down time, which means less time to reach the desired temperature. While conventional air cooling systems push air all around the system, and can potentially add heat from surrounding hot electronics, liquid cooling systems are equipped with a heat exchanger that routes heat away through a liquid circuit. Air-cooling systems in the higher capacity range often require larger fans, which can increase noise as well as the size of the system.
What's the difference between standard and custom products?
2024-10-30 - Technical Q&A Our standard products can be found in our product portfolio: Thermoelectric Coolers, Thermoelectric Cooler Assemblies, Liquid Cooling Systems, Temperature Controllers. These units have specific heat transfer methods, cooling capacity ranges or size constraints and can be ordered upon request from our distribution partners. If the capacity, size or other parameters of our standard products do not meet your application requirements you may need a customized solution. Laird Thermal Systems has the ability to customize our entire product range, however MOQ’s apply. To optimize performance and long-life operation, an application could require a customized thermal management solution. Also cooling capacities above 5 kW typically require a custom solution. Laird Thermal Systems designs and manufactures customized, thermal management solutions for performance-critical applications to optimize your product’s performance. Laird Thermal Systems offers strong engineering design services with a global presence that supports onsite concept generation, thermal modeling, mechanical and electrical design and rapid prototyping. The company also offers validation test services to meet unique compliance standards for each industry, such as UL, Telcordia, or a unique standard specific to a medical, industrial or semiconductor application.
Can I use thermoelectric coolers for heating?
2024-10-30 - Technical Q&A Yes, thermoelectric coolers can be used for heating in certain applications. In fact, a thermoelectric cooler can be more effective than a resistive heater since it can utilize heat from the ambient temperature in addition to the heat generated from the cooler itself.
How can I mount a thermoelectric device?
2024-10-30 - Technical Q&A There are three different ways of mounting thermoelectric coolers; soldering, compression with mechanical hardware or epoxy. The most suitable method depends on the application and the size of the footprint. Thermoelectric coolers can be mounted in any orientation. Read the TEM Handbook manual for more information.
How reliable is Thermoelectric cooling?
2024-10-30 - Technical Q&A Thermoelectric coolers are highly reliable because they have a solid-state construction with no moving parts. They are also known for having a high mean time between failures (MTBFs). It is difficult to estimate the lifetime of a thermoelectric cooler, due to the variables in application conditions such as changes to heat load, on/off cycling, heat or cooling, drive circuit and system design with protection against condensation. All variables can influence the product’s lifetime. However, for demanding applications such as modern diagnostic, which require high rates of thermal cycling, the PowerCycling PCX Series thermoelectric coolers have been tested to withstand rigorous cycle testing based on latest PCR industry test protocol without degradation in performance.
What temperature accuracy can Thermoelectric coolers achieve?
2024-10-30 - Technical Q&A Thermoelectric coolers have a very high temperature accuracy since the applied current is relative to the cooling it generates. Temperature control accuracy up to ±0.01°C can be achieved under steady state condition with a temperature controller of same accuracy to this tolerance.
How should I select between crystal oscillator/ceramic oscillator and built-in RC oscillator in ML22Q53x, ML22Q62x, and ML22Q66x?
2024-08-30 - Technical Q&A Switching between crystal oscillator/ceramic oscillator and built-in RC oscillator is set in the Speech LSI Utility used when creating voice code data. Please see "4.2.1.2.10. User setting Parameter Dialog (ML22(Q)53x/62x/66x)" in the Speech LSI Utility User's Manual. Please select “Source clock oscillation” here. Please select “X'tal” when using an external clock.
Does LTS offer standalone cooling systems?
2024-10-30 - Technical Q&A Yes, Laird Thermal Systems offers self-contained Liquid Cooling Systems. liquid cooling systems (LCS) that recirculate a coolant to a preprogrammed temperature setpoint.
What is the Thermal Wizard?
2024-10-30 - Technical Q&A The Thermal Wizard is a product search and selection tool that helps engineers find the optimal thermal management solution for thermoelectric coolers, thermoelectric cooler assemblies and liquid cooling systems.
How can I tell that thermoelectric cooling is the most suitable for my application?
2024-10-30 - Technical Q&A Thermoelectric cooling systems are most beneficial in applications with Tight space constraints, Low heat load capacities, typically less than < 400W, Control temperatures below ambient, Precise temperature control, Heating and cooling.
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