... choke coil,ferrite choke coil,high current choke coil,helmholtz coil 1.features: ER2806 for choke coil,ferrite choke coil,high current choke coil,helmholtz coil 2. ... applied in the linear filter ,current tranformer,smoothing choke coil,drive transformer•RM core core: filters, inductors and ... Jar-shape with self-shielding compared with ring-shape one, the jar-shape cores easily coiling, high inductance ...