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Plastic moulded very sturdy rectangular shaped cell holder with cover to hold 1.5 volt dry cell with sockets for output.
PHY-443.1	for one cell
PHY-443.2	for two cells
PHY-443.3	for four cells

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Fitted in elegantly painted metal case, output 2, 4, 6, 8, and 12 V at 8 A through 4 mm sockets workable on 230-240 volt a.c. input.

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The power supply is built in suitably sized steel cabinet employing modern technique and circuit; for measuring voltage and current are built in protection with fuse.
	Output current
PHY-445.1	1 Amp
PHY-445.2	2 Amp
PHY-445.3	3 Amp

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ON/OFF switch
Input voltage : 220V 50Hz
DC output : 0-12V, 0-1.5A, stabilized and continuously adjustable voltage, electronic protection. AC
output : 6V, 12V, max 2.5A, fuse protection.

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The power supply is built in suitably sized steel cabinet employing modern technique and circuit, meters for measuring voltage ,gives continuously variable a.c. and d.c. outputs up to 10 A for a.c. and 8 A for d.c. A meter is provided to indicated both a.c. and d.c. voltages. An internal fuse is provided for input and a resettable cut-out for output. With mains lead.
Mains input	220-240 V a.c. 50/60 Hz
Output voltages	0 to 25 V a.c. and unsmoothened full wave rectified d.c.
Output current	10 A maximum a.c.,8 A maximum d.c.
Voltage selection	Rotary continuously variable transformer operated by a large knob in front panel.
Metering	a.c and d.c output voltages by a moving coil meter with selector switch to select a.c or d.c
Circuit protection	Mains input 3 A internal glass fuse link. Output is protected by a resettable cut-out.
Output terminals	Colour coded 4 mm sockets.

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The power supply is built in suitably sized steel cabinet employing modern technique and circuit, meters for measuring voltage, these power supplies are d.c. regulated, stabilised short circuit and overload protected, easy and safe to use as a power source for electronic equipment. The power supply can be operated in either constant voltage or constant current mode. Both voltage and current are precisely regulated with low output ripple. Voltage and current readings are displayed on two separate 3½ digit meters. Output voltage, single or double, is continuously adjustable from 0 to 30 volts by coarse and fine controls.
Meters	3½ digital panel meters separately for voltage and current.
Accuracy of DPM	3½ digital panel meters separately for voltage and current.
Regulation	±0.05% for current.,±0.05% for voltage
Ripple	less than 3 mv r.ms
Input voltaget	230 volts ±10%, 50 Hz.
PHY-448.1	Capacity 1 Amp
PHY-448.2	Capacity 2 Amp
PHY-448.3	Capacity 5 Amp

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Same as PHY-448 but output indication is through separate analogue meters.
PHY-449.1	Capacity 1 Amp
PHY-449.2	Capacity 2 Amp
PHY-449.3	Capacity 3 Amp

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The power supply is built in suitably sized steel cabinet employing modern technique and circuit, meters for measuring voltage, general purpose H.T unit for use with thermionic tubes etc. provides two continuously variable d.c. outputs of 0-25 V and 0-300 V and fixed a.c output of 6.3 V for valve heaters. The two d.c. voltages are continuously and independently variable. Three meters are provided for reading HT, Bias, and LT voltages.
Mains Input	220-240 V, 50/60 Hz
Output HT	0 to 300 V d.c. at 30 mA
Bias	0 to 25 V d.c. at 5 mA
LT	6.3 V a.c. at 2 Amps.
Load Regulation HT	±1%
Line Regulation HT	±0.5%
Output terminals	Colour coded 4 mm sockets with one green socket for earthing.
Metering	Three meters to measure HT volts, HT current, Bias voltage.

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Mounted on a plastic/acrylic stand, with permanent magnets, spring controlled movement, jewelled bearings, hard polished pivots, and knife edge pointer. For D.C. use, each meter is with colour coded terminals.

Scale length approx 50 mm, dial dia 65 mm mounted in desk stand with two colour coded terminals. Overall size 90 x 110 x 90 mm approx. Accuracy: ±2.5% 0-30, 60 Volts.

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Same as PHY-468, but dual range.

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Same as PHY-452, but Triple range

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Same as PHY-454, but dual range.

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Same as PHY-454, but triple range.

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