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Need help?Do you have a question about the Philips HQ 4819 and is the answer not in the manual?
Details the 1-hour recharge via a 'Fly Back Self Oscillating Power supply' for 100-240V.
Describes LED indicator for charging status and functions like quick/trickle charge, dynamic supply.
Lists key technical data including input voltage, motor voltage, battery type, and charging time.
The Philips HQ 4819 is a rechargeable shaver designed for convenient and efficient grooming. This device is equipped with a 'Fly Back Self Oscillating Power supply' electronic circuit, which allows for versatile charging at 100-240 V, 50/60 Hz. This broad voltage compatibility makes the shaver suitable for use in various regions without the need for a voltage converter.
The primary function of the HQ 4819 is to provide a close and comfortable shave. It can be used either cordlessly, powered by its internal battery, or directly from the mains supply. This dual power option ensures that you can always use the shaver, even if the battery is depleted. The electronic circuit is designed to manage power efficiently, providing a reliable shaving experience.
The shaver incorporates several advanced features to optimize its performance and user experience. It includes a Quick Charge supply, which allows the battery to be fully recharged in approximately one hour. This rapid charging capability is particularly useful for users who need a quick shave and have limited time for charging. For maintaining the battery's health and readiness, the shaver also features a Trickle Charge supply, which provides a slower, continuous charge to keep the battery topped up without overcharging.
A dynamic supply of 1.25V is provided when the shaver is connected to the mains, ensuring consistent power for shaving directly from the wall outlet. This feature guarantees that the motor runs at optimal speed, providing an effective shave even when not relying on battery power.
The electronic circuit also integrates several protection mechanisms to ensure safety and longevity of the device. An open cell protection feature prevents damage to the battery if its voltage drops below 2.5V, safeguarding the battery from deep discharge. Inrush and surge protection, managed by resistor R1, protects the internal components from sudden spikes in electrical current, enhancing the shaver's durability.
Furthermore, the HQ 4819 includes a temperature protection system for the battery. This intelligent system monitors the battery's temperature during charging. If the battery temperature (Tbat) exceeds the ambient temperature (Tamb) by more than 5°C, or if Tbat rises above 65°C, the charging process will automatically switch from quick charge to trickle charge. This prevents overheating, which can damage the battery and reduce its lifespan, ensuring safe and efficient charging under various environmental conditions.
Using the HQ 4819 is straightforward and user-friendly. To charge the shaver, simply connect it to the mains supply. A green LED indicator will illuminate when the shaver is connected to the mains, providing a visual cue that charging has begun. This LED will blink to indicate that the battery is fully charged, allowing you to easily know when the device is ready for cordless use. The initial charging time for a new shaver is approximately 4 hours, after which subsequent quick charges will take about 60 minutes.
The shaver is designed for both wet and dry use, although the manual does not explicitly state this, the presence of a hair chamber and the general design of Philips shavers often imply this versatility. The shaving heads are designed to capture and cut hair efficiently, providing a smooth finish. The device includes a comfort control feature, which is set to a fixed setting, suggesting an optimized balance between closeness and skin comfort.
For maintenance and cleaning, the HQ 4819 comes with a cleaning brush. Regular cleaning of the shaving heads and hair chamber is essential to maintain optimal performance and hygiene. The shaving heads can be easily detached for thorough cleaning, ensuring that hair clippings do not accumulate and impede the motor or cutting elements. The device also includes a protecting cap, which should be used to cover the shaving heads when not in use, protecting them from damage and keeping them clean.
The shaver's design includes a lever for easy operation and a robust frame for durability. The motor assembly, gear assembly, and pinion work in conjunction to deliver consistent power to the shaving heads. The power module and NiMH cell AA battery are integrated within the housing assembly, which is protected by a cover. The flex assembly (available in GB and EU versions) ensures a secure connection to the power source.
Maintaining the HQ 4819 is crucial for its longevity and performance. The device is designed for easy disassembly of key components for cleaning and potential replacement. The holder assembly, hair chamber, and shaving heads can be accessed for routine cleaning. The cleaning brush provided is specifically designed to remove trapped hair and debris from the cutting elements.
The electronic circuit, housed within the power module, is designed to be robust and self-protective. However, if any issues arise, the modular design allows for easier servicing. The zener diode (BZX69-C6V2,113) and connecting strip are integral parts of the circuit, ensuring stable power delivery and protection.
For storage, the shaver comes with a pouch, which protects the device from dust and minor impacts when not in use or during travel. The protecting cap further shields the delicate shaving heads. Regular inspection of the shaving heads for wear and tear is recommended, and replacement heads (HQ4-4822 690 30468) are available to ensure continued optimal shaving performance. The screwdriver T8 (4822 395 50263) is specified, indicating that certain components may require this tool for maintenance or repair, suggesting a design that allows for user or professional servicing.
General| Blades | 3 |
|---|---|
| Battery Type | NiMH |
| Cordless Use | Yes |
| Quick Charge | No |
| Type | Rotary |
| Power Source | Rechargeable battery |
| Charging Time | 8 hours |
