As one of my older regulator designs is used for comparison purposes on the Belleson web site I feel that the right of reply must be exercised in this discussion. I believe the presentation of inaccurate or misleading data to gain commercial advantage is not acceptable.
There is more to regulator design than one parameter specification. Transient response, settling time, noise, output impedance, operating bandwidth and, most importantly, the resulting audible performance are all part of the equation.
The Hynes shunt regulator used in the performance comparisons presented on the Belleson web site is less noisy than the Belleson regulator. Well that’s a plus factor in favour of the Hynes regulator. The scope timebase settings used to measure the transient response are different, but show no difference, so the resolution of the test is not good enough, and the transient response and settling time of the two regulators cannot be compared with such a limited test bandwidth. It is also irrelevant to present information about a product used outside of it’s specification. This regulator module was not designed for high power use. I have other designs that are more suitable for such a test. The shunt regulator used in the test is the first generation of this product and it has been revised with performance improvements twice since the first generation, so the comparison is invalid compared to current product.
Everyone is asking which is the best option regarding this or that product yet I see little if any attempt to find this out. If anyone wants to do definitive unbiased tests regarding audible performance between Bellelson regulators and Hynes regulators, I will be pleased to supply regulators for trial purposes.
