Regarding the protection modification for the 1969 power amplifier, the 1969 power amplifier features a large capacitor output, which undergoes a charging and discharging process. Normally, the board closes with a delay of 3-4 seconds, but for the 1969, it takes over 1 minute. However, this is quite simple. Simply add a 1K resistor to the output terminal of the 1969 to discharge and it will close within seconds. No modifications are needed for other power amplifiers
The lifespan of Omron is also several times longer than that of domestic electrical appliances.
Features:
1. UPC1237 as the core component, featuring power-on delay, DC protection, and power-off surge protection.
2. Utilizes fully sealed high-current relays as the core components, eliminating concerns of contact sparking and oxidation.
3. Uses 7812 for voltage regulation, offering a wide power supply range from AC12V to AC24V.
4. Simple and reliable circuit design, easy to manufacture and commission-free.
5. Dimensions: 85x33mm. High-grade double-sided fiberboard, compact size, easy to install.
6. Weight: approximately 40
