Offering the following items for the amplifier builder:
a. Mini-Variacs 0-120VAC input 0-132VAC output @ 2 amps. Perfect for
adjusting critical filament voltage on the 8877's, 3-500's, and the
3cx1200A7's. 3" diameter 2" depth. Shaft mounted. Includes 1/4" shaft
lock. Good idea to install pinouts and an outboard meter to continually
monitor filament voltage. $18+ shipping
b. 5 amp 120VAC Variac. 0-135VAC output @ 5 amps. 3 hole front panel
mount. 5" diameter 3-1/2" depth. Additional fixed taps for 20 and 37VAC.
$25+ shipping
c. Potted Thermador 7-1/2VCT @ 25 amp filament xmfr. Accommodates the
4-000 A and the 3cx1200A7. 110/115/120VAc input. $55+ shipping
d. 8877 Filament xmfr 5VAC@ 10 amps. 220VAC primary. Additional
secondaries for 12VAC and fan control taps for 108,114,201 & 209VAC.
2.5"x2.5"x3" chassis mount $35+shipping
e. Thardarson choke #T-19037( I'm told it's a swinging choke 2-10H at
400ma) Porcelain standoffs. Potted. 5x6x5" $30
f. Potted (military quality) filament transformer for a pair of 8877's.
5VAC@ 20amps. 120VAC primary. 3x4x5" $65
g. Hallicrafters HT33 multi-tap filament/screen transformer. Long leads
ready to drop in. $20+ shipping.
Ron W2CQM/3
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