Note: There are quite a few additional power supply circuits in the ARRL Handbooks that have been published over the years. 1978 August QST p. 28 A Programmable Regulated Power Supply 1979 November QST p. 22 A Simple Utility Power Supply 1980 February QST p. 33 A Cheapie Charger for NiCad Batteries May QST p. 28 A Deluxe NiCad Charger for Hand-Held Transceivers October QST p. 34 Rewinding Transformers November QST p. 38 Converting Power-Line Transformers for Amateur Service QST p. 43 5-A Loafer 1981 April QST p. 40 From Cigar Lighter to 9.6 Volts October QST p. 34 Those NiCad Batteries and How to Charge Them QST p. 36 Polarity Inverter 1982 February QST p. 35 Protecting Your Equipment from Damaging 4 pages Power-Line Transients 1983 June QST p. 19 Introducing the PS5 - A Dependable 5-A 2 pages Portable Power Supply August QST p. 33 A Battery Low-Voltage Indicator 2 pages October QST p. 37 Overvoltage Protection for 13.8-V Power 4 pages Supplies 1984 March QST p. 16 The Perfect 10: A Power Supply for FM 4 pages Portables August QST p. 29 A Variable AC-Voltage Source 2 pages 1985 April QST p. 38 A Power Supply Performance Tester 7 pages June QST p. 37 Plug-in Wall Transformers - A Super 3 pages Bargain July QST p. 25 Construct the Ultimate DC Power Supply 6 pages December QST p. 25 The Super ACadapt 4 pages 1987 January QST p. 27 Some Power Supply Design Basics 3 pages May QST p. 23 A Line-Side Regulator for High-Voltage 3 pages Power Supplies June QST p. 28 A New Chip for Charging Gelled Cell 4 pages Batteries August QST p. 28 The Lunchbox (portable 12 V) 4 pages QEX p. 8 Transverter Band Swithcing Display and 7 pages Universal Power Supply October QST p. 37 Unequal Equalizing Resistors Spell 1 page Diode Doom (H&K) 1988 February QST p. 23 Power Supplies, Quick and Easy 3 pages 1989 September QST p. 22 A 1.25 to 25-V 2.5A Regulated Power Supply November QST p. 17 An Adapter for Powering Hand-held Rigs From 12-volt Sources November QST p. 29 Some Power-Supply Design Hints 1990 March QST p. 34 Practical Battery-Back-Up Power for Amateur Radio Stations--Part 1 April QST p. 32 Practical Battery-Back-Up Power for Amateur Radio Stations--Part 2 May QST p. 25 Practical Battery-Back-Up Power for Amateur Radio Stations--Part 3