Boshan Motor Sales Corporation () specializing in the production and sales of various micro-motor, geared motor, DC converter power supply, automotive starter, generators and accessories. 
 Introduction 
 pwm, wk, sk series of power supply using pulse width modulation technology, the choice of today's advanced design and production of switching devices, with small volume no noise, high efficiency and short circuit protection with advanced functions (to ensure that positive and negative frequency motor rpm), and the armature output voltage is high, the armature voltage is continuously adjustable from zero to rated value, which makes the motor speed is extremely convenient, as a result of the series of high frequency power supply to the motor at low speeds to ensure stable work (ie does not appear creeping phenomenon) is the ideal alternative to SCR speed electrical power generation product. 
 DC servo motor for SZ; ZYT permanent magnet DC motor; J-SZ (ZYT)-PX DC gear motor; KC50 Series DC motor DC gear motor. Contact: Wei Bo 
 Model input voltage output voltage and current 
 WK411 (PWM411) type AC220V DC 0-110V 4A 
 WK422 (PWM422) type AC220V DC 0-220V 4A 
 WK611 (PWM611) type AC220V DC 0-110V 6A 
 WK622 (PWM622) type AC220V DC 0-220V 6A 
 SK series governor, functions based on an increase in the WK maximum speed, minimum speed setting. Current positive feedback circuit, so no external power sensors in the machine to reach steady speed accuracy under 1%. SKH series increased braking, for the function. microcontroller has built-in process control, relay. brake for no impact to the process, no spark. increases the system stability. 
 Model input voltage output voltage and current 
 SK400A type AC220V DC 0-110V 4A 
 SK400B type AC220V DC 0-220V 4A 
 SK800A type AC220V DC 0-110V 8A 
 SK800B type AC220V DC 0-220V 8A 
 Reversible control model requires: SK400AH, SK400BH, SK800AH, SK800BH internal relay with reversing, dynamic braking relay, single-chip computer control from the built-in commutation. For there is no spark to the process of interference. If the work to be positive and negative direction of the motor running, please use the above four types of power, the other start and stop time, according to user needs, making adjustments, no special requirements, usually in 5S. 
 Ordering Information 
 1. When ordering, please specify the input voltage, output voltage, power, current, and so on. 
 2. Users, such as requiring electrical derived, the structure can be derived or special requirements when ordering negotiations, I can design and production. 
 3. Welcome to order over the phone sales department: 0533 -